Hardware
Documentation
D at a S h e e t
®
HAL 371x, HAL 372x,
HAL 373x
Robust Programmable
2D Position Sensor Family
with Arbitrary Output Function
Edition Oct. 27, 2017
DSH000192_001EN
DATA SHEET
HAL 371x, HAL 372x, HAL 373x
Copyright, Warranty, and Limitation of Liability
The information and data contained in this document are believed to be accurate and reliable. The software and proprietary information contained therein may be protected by
copyright, patent, trademark and/or other intellectual property rights of TDK-Micronas. All
rights not expressly granted remain reserved by TDK-Micronas.
TDK-Micronas assumes no liability for errors and gives no warranty representation or
guarantee regarding the suitability of its products for any particular purpose due to these
specifications.
By this publication, TDK-Micronas does not assume responsibility for patent infringements
or other rights of third parties which may result from its use. Commercial conditions, product availability and delivery are exclusively subject to the respective order confirmation.
Any information and data which may be provided in the document can and do vary in
different applications, and actual performance may vary over time.
All operating parameters must be validated for each customer application by customers’
technical experts. Any new issue of this document invalidates previous issues.
TDK-Micronas reserves the right to review this document and to make changes to the
document’s content at any time without obligation to notify any person or entity of such
revision or changes. For further advice please contact us directly.
Do not use our products in life-supporting systems, military, aviation and aerospace
applications! Unless explicitly agreed to otherwise in writing between the parties,
TDK-Micronas’ products are not designed, intended or authorized for use as components in systems intended for surgical implants into the body, or other applications
intended to support or sustain life, or for any other application in which the failure of the
product could create a situation where personal injury or death could occur.
No part of this publication may be reproduced, photocopied, stored on a retrieval system
or transmitted without the express written consent of TDK-Micronas.
TDK-Micronas Trademarks
– HAL
– 3D HAL
Third-Party Trademarks
All other brand and product names or company names may be trademarks of their
respective companies.
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DATA SHEET
Contents
Page
Section
Title
4
5
6
1.
1.1.
1.2.
Introduction
Major Applications
Features
7
7
2.
2.1.
Ordering Information
Device-Specific Ordering Codes
9
9
10
10
10
11
13
19
21
23
25
3.
3.1.
3.2.
3.2.1.
3.2.2.
3.2.2.1.
3.2.2.2.
3.3.
3.4.
3.5.
3.6.
Functional Description
General Function
Signal Path and Register Definition
Signal Path
Register Definition
RAM Registers
EEPROM Registers
Output Linearization
NVRAM Register
On-board Diagnostic Features
SENT Output
27
27
29
29
29
29
30
30
31
31
32
33
38
4.
4.1.
4.2.
4.3.
4.3.1.
4.3.2.
4.3.3.
4.4.
4.5.
4.6.
4.7.
4.8.
4.9.
Specifications
Outline Dimensions
Soldering, Welding, Assembly
Sensitive Area
Physical Dimension
Definition of Magnetic Field Vectors
Package Parameters and Position
Pin Connections and Short Description
Absolute Maximum Ratings
Storage and Shelf Life
Recommended Operating Conditions
Characteristics
Magnetic Characteristics
40
40
40
40
41
42
42
5.
5.1.
5.2.
5.3.
5.4.
5.5.
5.6.
Application Notes
Ambient Temperature
EMC and ESD
Application Circuit for HAL 3715 and HAL 372x
Application Circuit for HAL 3711 and HAL 373x
Measurement of a PWM Output Signal of HAL 3711 & HAL 373x
Recommended Pad Size SOIC8 Package
43
43
44
45
6.
6.1.
6.2.
6.3.
Programming of the Sensor
Programming Interface
Programming Environment and Tools
Programming Information
46
7.
Document History
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Robust Programmable 2D Position Sensor Family with Arbitrary Output Function
Release Note: Revision bars indicate significant changes to the previous document.
1. Introduction
The HAL 37xy family comprises the second generation of sensors using the proprietary
Micronas 3D HAL technology. This new family has several members. HAL 372x
provides a linear, ratiometric analog output signal with integrated wire-break detection
working with pull-up or pull-down resistors. Compared to HAL 372x, the HAL 371x is
splitting the 360° measurement range either into four repetitive 90° (MOD 90°) or three
120° (MOD 120°) segments. HAL 373x features digital output formats like PWM and
SENT (according to SAE-J2716 release 2010). The digital output format is customer
programmable. The PWM output is configurable with frequencies between 0.2 kHz and
2 kHz with up to 12 bit resolution.
Conventional planar Hall technology is only sensitive to the magnetic field orthogonal to
the chip surface. In addition to the orthogonal magnetic field, HAL 37xy is also sensitive
for magnetic fields applied in parallel to the chip surface. This is possible by integrating
vertical Hall plates into the standard CMOS process.
The sensor cell can measure three magnetic-field components BX, BY, and BZ. This
enables a new set of applications for position detection, like wide distance, angle or
through-shaft angular measurements. The Table 1–1 below describes the different family
members.
Table 1–1: HAL 37xy family overview
Type
Output Format
Detectable Field
Component
HAL 3711
PWM/Modulo
BX and BY
HAL 3715
Analog/Modulo
BX and BY
HAL 3725
Analog
BX and BY
HAL 3726
Analog
BY and BZ
HAL 3727
Analog
BX and BZ
HAL 3735
PWM & SENT
BX and BY
HAL 3736
PWM & SENT
BY and BZ
HAL 3737
PWM & SENT
BX and BZ
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HAL 371x, HAL 372x, HAL 373x
On-chip signal processing calculates the angle from two of the magnetic field components
and converts this value to an output signal. Due to the measurement method, the sensor
exhibits excellent drift performance over the specified temperature range resulting in a
new class of accuracy for angular or linear measurements.
Additionally to the built-in signal processing, the sensor features an arbitrary programmable linear characteristic for linearization of the output signal (with up to 33 setpoints).
Major characteristics like gain and temperature dependent offset of X/Y- and Z-channel,
reference position, phase shift between X/Y- and Z-signal, hysteresis, low-pass filter
frequency, output slope, and offset and clamping levels can be adjusted to the magnetic
circuitry by programming the non-volatile memory.
The sensors contain advanced on-board diagnostic features that enhance fail-safe detection. In addition to standard checks, such as overvoltage and undervoltage detection and
wire break, internal blocks such as ROM and signal path are monitored during normal
operation. For devices with a selected PWM output, the error modes are indicated by a
changing PWM frequency and duty-cycle. For SENT output a dedicated error code will be
transmitted.
The devices are designed for automotive and industrial applications and operate in a
junction temperature range from 40 °C up to 170 °C.
The sensors are available in a four-pin leaded transistor package TO92UP, as well as in
a SOIC8 package.
1.1. Major Applications
Due to the sensor’s versatile programming characteristics and its high accuracy, the
HAL 37xy is the optimal system solution for applications such as:
– Linear movement measurement,
• EGR valve position
• Clutch pedal position
• Cylinder and valve position sensing
– Rotary position measurement, like
• Gear selector
• Throttle valve position, etc.
• Chassis position sensors (ride-height control) with HAL 371x
– Joystick
– Non-contact potentiometer
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1.2. Features
– Angular and position measurement extremely robust against temperature and stress
influence
– 12 bit ratiometric linear analog output for HAL 3715/HAL 372x
– Modulo 90°/120° for HAL 371x
– 0.2 kHz to 2 kHz PWM (up to 12 bit)
or 12 bit SENT output for HAL 3711/HAL 373x
– Programmable arbitrary output characteristic with up to 33 setpoints
– 8 kHz sampling frequency
– Operates from 4.5 V up to 5.5 V supply voltage
– Operates from 40 °C up to 150 °C ambient temperature
– Programming via the sensor’s output pin
– Programmable characteristics in a non-volatile memory (EEPROM) with redundancy
and lock function
– Programmable first-order low-pass filter
– Programmable hysteresis on X/Y- or Z-channel
– Programmable output gain and offset
– X/Y- and Z-channel gain of signal path programmable
– Second-order temperature-dependent offset of signal path programmable for X/Y- or
Z-channel
– Phase shift between X/Y- and Z-channel programmable
– Programmable offset before angle calculation block
– Programmable output clamping for error band definition
– Programmable reference position
– Programmable magnetic detection range
– 32 bit identification number for customer
– 32 bit identification number with TDK-Micronas production information
(like X,Y position on production wafer)
– On-board diagnostics of different functional blocks of the sensor
– Short-circuit protected push-pull output
– Over- and reverse voltage protection at VSUP
– Under- and overvoltage detection of VSUP
– Wire-break detection with pull-up or pull-down resistor
– EMC and ESD robust design
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2. Ordering Information
A Micronas device is available in a variety of delivery forms. They are distinguished by a
specific ordering code:
XXX NNNN PA-T-C-P-Q-SP
Further Code Elements
Temperature Range
Package
Product Type
Product Group
Fig. 2–1: Ordering Code Principle
For a detailed information, please refer to the brochure: “Hall Sensors: Ordering Codes,
Packaging, Handling”.
2.1. Device-Specific Ordering Codes
The HAL 37xy is available in the following package and temperature variants.
Table 2–1: Available packages
Package Code (PA)
Package Type
DJ
SOIC8-1
UP
TO92UP-1
Table 2–2: Available temperature ranges
Temperature Code (T)
Temperature Range
A
TJ = 40 °C to +170 °C
The relationship between ambient temperature (TA) and junction temperature (TJ) is
explained in Section 5.1. on page 40.
For available variants for Configuration (C), Packaging (P), Quantity (Q), and Special
Procedure (SP) please contact TDK-Micronas.
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Table 2–3: Available ordering codes and corresponding package marking
Available Ordering Codes
Package Marking
HAL3711DJ-A-[C-P-Q-SP]
3711A
HAL3711UP-A-[C-P-Q-SP]
3711A
HAL3715DJ-A-[C-P-Q-SP]
3715A
HAL3715UP-A-[C-P-Q-SP]
3715A
HAL3725DJ-A-[C-P-Q-SP]
3725A
HAL3725UP -A-[C-P-Q-SP]
3725A
HAL3726DJ-A-[C-P-Q-SP]
3726A
HAL3726UP-A-[C-P-Q-SP]
3726A
HAL3727DJ-A-[C-P-Q-SP]
3727A
HAL3727UP-A-[C-P-Q-SP]
3727A
HAL3735DJ-A-[C-P-Q-SP]
3735A
HAL3735UP -A-[C-P-Q-SP]
3735A
HAL3736DJ-A-[C-P-Q-SP]
3736A
HAL3736UP-A-[C-P-Q-SP]
3736A
HAL3737DJ-A-[C-P-Q-SP]
3737A
HAL3737UP-A-[C-P-Q-SP]
3737A
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3. Functional Description
3.1. General Function
HAL 371x, HAL 372x and HAL 373x are 2D position sensors based on the Micronas
3D HAL technology. The sensors include two vertical and one horizontal Hall plate with
spinning current offset compensation for the detection of X, Y or Z magnetic field components, a signal processor for calculation and signal conditioning of two magnetic field
components, protection devices, and a ratiometric linear analog, PWM or SENT output.
The spinning current offset compensation minimizes the errors due to supply voltage
and temperature variations as well as external package stress.
The signal path of HAL 37xy consists of two channels (CH1 and CH2). Depending on
the product variant two out of the three magnetic field components are connected to
Channel 1 and Channel 2.
The sensors can be used for angle measurements in a range between 0° and 360° (end
of shaft and through shaft setup) as well as for robust position detection (linear movement or position). The in-system calibration can be utilized by the system designer to
optimize performance for a specific system. The calibration information is stored in an
on-chip EEPROM.
The HAL 37xy is programmable by modulation of the output voltage. No additional
programming pin is needed.
VSUP
Internally
stabilized
Supply and
Protection
Devices
Temperature
Dependent
Bias
Open-circuit,
Overvoltage,
Undervoltage
Detection
Oscillator
TEST
X/Y/Z
Hall Plate
D/A
Converter
A/D
DSP
X/Y/Z
Hall Plate
33 Setpoints
Linearization
A/D
Protection
Devices
Analog
Output
OUT
PWM/SENT
Module
EEPROM Memory
Temperature
Sensor
A/D
Converter
Digital
Output
Lock Control
GND
Fig. 3–1: HAL 37xy block diagram
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3.2. Signal Path and Register Definition
3.2.1. Signal Path
fsample
CH1_COMP
CUST_OFFSET
CH1/CH2_GAIN
GAIN_CH1 X
Channel 1 (CH1)
A
CUST_OFFSETCH1
Adjusted
Values
LP
D
1st order
LP
+
X
+
X CUST_OFFSETCH2
BCH2
A
LP
D
1st order
LP
Adjusted
Values
+
X
Hysteresis
BCH1
ANGLE_IN_CH2
ANGLE_IN_CH1
X
Angle
calculation
ANGLE_AMP
LP_FILTER
+
Channel 2 (CH2)
GAIN_CH2
Tw (temp.)
MAG_LOW
MAG_HIGH
OUT_ZERO
CH2_COMP
TADC
A
ADJ
D
TADJ
MOD
90°/120°
D/A
scale
CI
ANGLE_OUT
Linearization
33 Setpoints
CP
D
A
VOUT
ANGLE_OUT
DAC
MOD_REG
(HAL 371x only)
OUT_OFFSET SP0 to SP32 CLAMP-HIGH
OUT_GAIN
CLAMP-LOW
PRE_OFFSET
SENT
SENTOUT
PWM
PWMOUT
PWM FREQUENCY
Fig. 3–2: Signal path of HAL 37xy
3.2.2. Register Definition
The DSP part of this sensor performs the signal conditioning. The parameters for the DSP
are stored in the EEPROM/NVRAM register. Details of the signal path are shown in
Fig. 3.2.
Terminology:
GAIN:
name of the register or register value
Gain:
name of the parameter
Blue color: register names
The sensor signal path contains two kinds of registers. Registers that are readout only
(RAM) and programmable registers EEPROM/NVRAM. The RAM registers contain
measurement data at certain steps of the signal path and the EEPROM/NVRAM registers
have influence on the sensors signal processing.
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3.2.2.1. RAM Registers
TADJ
The TADJ register contains the digital value of the sensor junction temperature. It has a
length of 16 bit and is binary coded. From the 16 bit only the range between 0 32767
is used for the temperature information. Typically the temperature sensor is calibrated
in the way that at 40 °C the register value is 100 LSB and at 160 °C it is 12000 LSB.
CH1_COMP and CH2_COMP
CH1_COMP and CH2_COMP register contain the temperature compensated magnetic
field information of channel 1 and channel 2. Both registers have a length of 16 bit each
and are two’s-complement coded. Therefore, the register values can vary between
32768 32767.
ANGLE_IN_CH1 and ANGLE_IN_CH2
ANGLE_IN_CH1 and ANGLE_IN_CH2 register contain the customer compensated
magnetic field information of channel 1 and channel 2 used for the angle calculation.
These registers include already customer phase-shift, gain and offset correction as well
as an hysteresis. Both registers have a length of 16 bit each and are two’s-complement
coded. Therefore, the register values can vary between 32768 32767.
ANGLE_OUT
The ANGLE_OUT register contains the digital value of the position calculated by the
angle calculation algorithm. It has a length of 16 bit and is binary. From the 16 bit only
the range between 0 32767 is used for the position information. Position can either
be an angular position (angle) or a virtual angle calculated out of two magnetic field
directions in case of linear position measurements.
DAC
The DAC register contains the digital equivalent of the output voltage, PWM output
duty-cycle or the SENT data. It has a length of 16 bit and is binary. From the 16 bit only
the range between 0 32767 is used for the position information. Position can either
be an angular position (angle) or a virtual angle calculated out of two magnetic field
directions in case of linear position measurements.
ANGLE_AMP
The ANGLE_AMP register contains the digital value of the magnetic field amplitude
calculated by the angle calculation algorithm. From mathematical point of view the amplitude can be calculated from the signals in channel 1 and channel 2 (X/Y/Z-components).
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Example:
Amplitude =
2
CH1 + CH2
2
The angle calculation algorithm adds a factor of roughly 1.6 to the equation for the
magnetic amplitude. So the equation for the amplitude is defined as follows:
2
ANGLE_AMP 1,6 CH1 + CH2
2
DIAGNOSIS
The DIAGNOSIS register identifies certain failures detected by the sensor. HAL 37xy
performs self-tests during power-up of the sensor and also during normal operation.
The result of these self tests is stored in the DIAGNOSIS register. DIAGNOSIS register
is a 16 bit register.
Table 3–1: Bit definition of the DIAGNOSIS register
Bit no.
Function
Description
15:10
None
Reserved
9
DAC Output High Clamping This bit is set to 1 in case that the high clamping value of the DAC is
reached.
8
DAC Output Low Clamping
This bit is set to 1 in case that the low clamping value of the DAC is
reached.
7
Channel 1 Clipping
6
Channel 2 Clipping
These bits are set to 1 in case that the A/D converter in channel 1
and/or 2 detects an under- or overflow
5
DSP Self Test
The DSP is doing the internal signal processing like angle calculation,
temperature compensation, etc.
This bit is set to 1 in case that the DSP self test fails. (continuously
running)
4
EEPROM Self Test
This bit is set to 1 in case that the EEPROM self-test fails.
(Performed during power-up or continuously running). Bit for diagnosis
latching must be set to 1.
3
ROM Check
This bit is set to 1 in case that ROM parity check fails.
(continuously running).
2
None
Reserved
1
MAGHI
This bit is set to 1 in case that the magnetic field is exceeding the
MAG-HI register value (magnetic field to high)
0
MAGLO
This bit is set to 1 in case that the magnetic field is below the
MAG-LOW register value (magnetic field to low)
Details on the sensor self tests can be found in Section 3.5. on page 23.
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PROG_DIAGNOSIS
The PROG_DIAGNOSIS register allows the customer to identify errors occurring during
programming and writing of the EEPROM or NVRAM. The customer must check the first
and second acknowledge. It is mandatory to activate the Diagnosis Latch bit during end
of line testing. Additionally, CLAMP-LOW must be set to 100% in case of HAL 3711 and
HAL 373x. Otherwise programming errors will not be indicated by the second acknowledge. To enable debugging of the production line it is recommended to read back the
PROG_DIAGNOSIS register and the DIAGNOSIS register in case of a missing second
acknowledge. Please check the “HAL 37xy, HAR 37xy User Manual” for further details.
The PROG_DIAGNOSIS register is a 16 bit register. The following table shows the
different bits indicating certain error possibilities.
Table 3–2: Bit definition of the PROG_DIAGNOSIS register
Bit no.
Function
Description
15:11
None
Reserved
10
Charge Pump Error
This bit is set to 1 in case that the internal programming voltage was too low
9
Voltage Error during
Program/Erase
This bit is set to 1 in case that the internal supply voltage was too low
during program or erase
8
NVRAM Error
This bit is set to 1 in case that the programming of the NVRAM failed
5:0
Programming
These bits are used for programming the memory
3.2.2.2. EEPROM Registers
Note
For production and qualification tests it is mandatory to set the LOCK bit
after final adjustment and programming.
Note
Please refer to the “HAL 37xy, HAR 37xy User Manual” for further details
on register settings/calculation and programming of the device.
Micronas IDs
The MIC_ID1 and MIC_ID2 registers are both 16 bit organized. They are read-only and
contain TDK-Micronas production information, like X/Y position on the wafer, wafer
number, etc.
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Customer IDs
The CUST_ID1 and CUST_ID2 registers are both 16 bit organized. These two registers
can be used to store customer production information, like serial number, project
information, etc.
CH1/CH2_GAIN
CH1/CH2_GAIN can be used to compensate a phase-shift between channel 1 and
channel 2. The register has a length of 16 bit. It is possible to make a phase shift correction
of 75°. The step size and therefore the smallest possible correction is 0.002°. The register
is two’s-complement coded and ranges from 32768 to 32767. The register value is sin
function based.
Neutral value for this register is zero (no Phase-shift correction).
Note
In case the phase-shift correction is used, then it is necessary to adapt the
settings of GAIN_CH2 too. For details see definition of GAIN_CH2.
GAIN_CH1 and GAIN_CH2
GAIN_CH1 and GAIN_CH2 can be used to compensate amplitude mismatches between
channel 1 and channel 2. TDK-Micronas delivers pre calibrated sensors with compensated
gain mismatch between channel 1 and channel 2. Nevertheless it is possible that due to
the magnetic circuit a mismatch between channel 1 and channel 2 gain occurs. This can
be compensated with GAIN_CH1 and GAIN_CH2.
Both registers have a length of 16 bit and are two’s-complement coded. Therefore, they
can have values between 32768 and 32767 (2 2). For neutral settings both register
values have to be set to 1 (register value 16384).
In case that the phase-shift correction is used it is necessary to change also the gain of
channel 2 (see also CH1/CH2_GAIN). If phase-shift correction is used the corresponding
register has to be set to
16384
GAIN_CH2 = ---------------------------------------cos Phase-shift
Note
In case GAIN_CH1 or GAIN_CH2 exceed the range of 2 2 (32768
32767), then it is possible to reduce the gain of the opposite channel for
compensation.
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CUST_OFFSET
CUST_OFFSET can be used to compensate an offset in channel 1 and channel 2.
TDK-Micronas delivers pre calibrated sensors. Nevertheless it is possible that due to
the magnetic circuit an offset in channel 1 and channel 2 occurs. This can be compensated with CUST_OFFSET.
The customer offset can also have a temperature coefficient to follow the temperature
coefficient of a magnet. The customer offset consists of a polynomial of second-order
represented by the three registers CUST_OFFSET1...3.
The customer offset can be added to channel 1 and/or channel 2 by the selection
coefficients CUST_OFFSETCH1 and CUST_OFFSETCH2. Additionally these two
registers can be used to scale the temperature dependent offset between 0% and 100%.
All five registers have a length of 16 bit each and are two’s-complement coded. Therefore, they can have values between 32768 and 32767.
HYSTERESIS
HYSTERESIS defines the number of digital codes used as an hysteresis on channel 1
and channel 2 before the angle calculation. The purpose of this register is to avoid
angle variation on the ANGLE_OUT register and finally on the output signal due to the
noise on the ANGLE_IN_CH1 and ANGLE_IN_CH2 signals.
The register has a length of 16 bit and is two’s complement number.
It is possible to program a hysteresis between 1 LSB and 16383 LSB. The register
value itself must be stored as a negative value.
The hysteresis function is deactivated by setting the register value to zero.
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OUT_ZERO
OUT_Zero defines the reference position for the angle output. It can be set to any value
of the output range. It is the starting point/reference for the 33 setpoints. OUT_ZERO
has a register length of 16 bit and it is two’s-complement coded.
Note
Before reading ANGLE_OUT it is necessary to set OUT_ZERO to 0.
360°
270°
90°
0°
180°
Fig. 3–3: Example definition of zero degree point
Secondly this angle can be used to shift the PI discontinuity point of the angle calculation to
the maximum distance from the required angular range in order to avoid the 360°-wrapping
of the output due to noise.
PRE_OFFSET
The PRE_OFFSET register allows to shift the angular range to avoid an overflow of the
internal 16 bit calculation/signal path.
The PRE_OFFSET register has a length of 16 bit and is two’s-complement coded.
OUT_GAIN
OUT_GAIN defines the gain of the output signal. The register has a length of 16 bit and is
two’s-complement coded. OUT_GAIN = 1 is neutral setting and leads to a change of the
output signal from 0% to 100% for an angle change from 0° to 360° (if OUT_OFFSET is
set to 0).
OUT_GAIN can be changed between 64 and 64.
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OUT_OFFSET
OUT_OFFSET defines the offset of the output signal. The register has a length of 16 bit
and is two’s complement coded. OUT_OFFSET = 0 is neutral setting and leads to a
change of the output signal from 0% to 200% of full scale for an angle change from 0° to
360° (If OUT_GAIN is set to 1).
OUT_OFFSET can be changed between 200% and 200% of full scale.
OUT_OFFSET = 0 leads to a voltage offset of 0% of full scale and OUT_OFFSET = 32768
leads to a offset of 200% of VSUP.
Clamping Levels (CLAMP-LOW & CLAMP-HIGH)
The clamping levels CLAMP_LOW and CLAMP_HIGH define the maximum and minimum output voltage of the analog output. The clamping levels can be used to define the
diagnosis band for the sensor output. Both registers have a bit length of 16 bit and are
two’s-complemented coded. Both clamping levels can have values between 0% and
100% of full scale.
Magnetic Range Check
The magnetic range check uses the magnitude output and compares it with an upper and
lower limit threshold defined by the registers MAG-LOW and MAG-HIGH. If either low or
high limit is exceeded then the sensor will indicate it with an overflow on the sensors output (output high clamping).
MAG-LOW
MAG-LOW defines the low level for the magnetic field range check function. This register
has a length of 16 bit and is two’s complement number.
MAG-HIGH
MAG-HIGH defines the high level for the magnetic field range check function. This register
has a length of 16 bit and is two’s complement number.
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DATA SHEET
Low-Pass Filter
With the LP_Filter register it is possible to select different 3 dB frequencies for
HAL 37xy. The low-pass filter is a 1st-order digital filter and the register is 16 bit organized. Various typical filter frequencies between 4 kHz (no filter) and 10 Hz are available.
35000
30000
LP_Filter [LSB]
25000
20000
15000
10000
5000
0
0
500
1000
1500
2000
2500
3000
3500
4000
3 dB Frequency [Hz]
Fig. 3–4: 3dB filter frequency vs. LP_FILTER codes
Modulo Select
The MODULO_Select register is only available in HAL 371x. With this register, the
customer can switch between Modulo 90° and 120° output.
HAL 371x is splitting the 360° measurement range either into four repetitive 90° (MOD
90°) or three 120° (MOD 120°) segments.
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DATA SHEET
3.3. Output Linearization
In certain applications (e.g. through shaft applications or position measurements) it is
required to linearize the output characteristic. The resulting output characteristic “value
vs. angle/position” is not a linear curve as in the ideal case. But it can be linearized by
applying an inverse nonlinear compensation curve.
4
Output Signal [counts]
4
x 10
3
2
1
0
-1
Input signal [counts]
-2
Linearized
Distorted
Compensation
-3
-4
-4
-3
-2
-1
0
1
2
3
4
4
x 10
Fig. 3–5: Example for output linearization
output
For this purpose the compensation curve will be divided into 33 segments with equal
distance. Each segment is defined by two setpoints, which are stored in EEPROM. Within
the interval, the output is calculated by linear interpolation according to the position within
the interval.
xnl: non linear distorted input value
yl: linearized value
remaining error
ysn+1
yl
ysn
xsn xnl
xsn+1
input
Fig. 3–6: Linearization - detail
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DATA SHEET
HAL 371x, HAL 372x, HAL 373x
The constraint of the linearization is that the input characteristic has to be a monotonic
function. In addition, it is recommended that the input does not have a saddle point or
inflection point, i.e. regions where the input is nearly constant. This would require a high
density of set points.
To do a linearization the following steps are necessary:
– Measure output characteristics over full range
– Find the inverse (Point-wise mirroring the graph on the bisectrix)
– Do a spline fit on the inverse
– Insert digital value of set point position into spline fit function for each set point (0, 1024,
2048, , 32768)
– Resulting values can be directly entered into the EEPROM
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DATA SHEET
3.4. NVRAM Register
Customer Setup
The CUST_SETUP register is a 16 bit register that enables the customer to activate
various functions of the sensor like diagnosis modes, functionality mode, customer lock,
communication protocol speed, etc.
Table 3–3: Customer Setup Register
Bit no.
Function
Description
15
None
Reserved
14
EEPROM Self-Test
EEPROM Self-Test Mode
0: Running during Power-Up
1: Continuously
13
Communication speed
Communication protocol bit time speed
0: typ. 1 ms
1: typ. 0.25 ms
12
DIGMOD
Output format for HAL 3711/HAL 373x devices
0: PWM output
1: SENT output
11:10
PWMFREQ
Defines the frequency of the PWM output for HAL 3711/HAL 373x
devices only
0: 1 kHz
1: 500 Hz
2: 200 Hz
3: 2 kHz (11 bit)
9:8
Output Short Detection 0: Disabled
1: High & low side over current detect. Error Band = High: OUT = VSUP
Error Band = Low: OUT = GND
2: High & low side over current detect. Error Band = High: OUT = GND
Error Band = Low: OUT = VSUP
3: Low side over current detection
OUT = Tristate in error case
7
Error Band
Error band selection for locked devices (Customer Lock bit set).
0: High error band (VSUP)
1: Low error band (GND)
The sensor will always go to high error band as long as it is not locked
(Customer Lock bit not set).
6
Burn-In Mode
0: Disabled
1: Enabled
5
Functionality Mode
0: Extended
1: Normal
(see Section 4.8. on page 33)
4
Communication Mode
(POUT)
TDK-Micronas GmbH
Communication via output pin
0: Disabled
1: Enabled
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DATA SHEET
Table 3–3: Customer Setup Register, continued
Bit no.
Function
Description
3
Overvoltage Detection
0: Overvoltage detection active
1: Overvoltage detection disabled
2
Diagnosis Latch
Latching of diagnosis bits
0: No latching
1: Latched till next POR (power-on reset)
1
Diagnosis
0: Diagnosis errors force output to error band (VSUP)
1: Diagnosis errors do not force output to error band (VSUP)
0
Customer Lock
Bit must be set to 1 to lock the sensor memory
The Output Short Detection feature is implemented to detect a short circuit between two
sensor outputs. The customer can define how the sensor should signalize a detected short
circuit (see table above). The time interval in which the sensor is checking for an output
short and the detectable short circuit current are defined in Section 4.8. on page 33.
This feature should only be used in case that two sensors are used in one module. In
case that the Output Short Detection is not active both sensors will try to drive their output voltage and the resulting voltage will be within the valid signal band.
Note
The Output Short Detection feature is only active after setting the Customer
Lock bit and a power-on reset.
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DATA SHEET
HAL 371x, HAL 372x, HAL 373x
3.5. On-board Diagnostic Features
The HAL 37xy features two groups of diagnostic functions. The first group contains basic
functions that are always active. The second group can be activated by the customer
and contains supervision and self-tests related to the signal path and sensor memory.
Diagnostic features that are always active:
– Wire break detection for supply and ground line
– Undervoltage detection
– Thermal supervision of output stage (overcurrent, short circuit, etc.)
– EEPROM self-test at power-on
Diagnostic features that can be activated by customer:
– Continuous EEPROM self-test
– ROM parity check
– Output signal clamping
– A/D converter clipping
– Continuous DSP self-test
– Magnetic range detection
– Overvoltage detection
In case of HAL 3715 and HAL 372x, the sensor indicates a fault immediately by switching
the output signal to the selected error band in case that the diagnostic mode is activated
by the customer. The customer can select if the output goes to the upper or lower error
band by setting bit number 7 in the CUST_SETUP register (Table on page 21). An output
short drives the output to VSUP, GND or tristate depending of the customer settings as
described in Table 3–3 on page 21. Further details can be found in Section 4.8. on
page 33.
The sensor switches the output to tristate if an overtemperature is detected by the thermal
supervision. The sensor switches the output to ground in case of a VSUP wire break and to
VSUP in case of a GND wire break.
HAL 3711 and HAL 373x indicate a failure by changing the PWM frequency. The
different errors are then coded in different duty-cycles.
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DATA SHEET
Table 3–4: Failure indication for HAL 373x
Failure Mode
Frequency
Duty-Cycle
EEPROM, ROM and
DSP self-test
50%
95%
Magnetic field too low
50%
62.5%
Magnetic field too high
50%
55%
Overvoltage
50%
75%
Undervoltage
No PWM
n.a.
A/D converter clipping
50%
70%
In case of undervoltage, the PWM signal will be constantly 'high' or 'low' depending on
the setting of bit number 7 in the CUST_SETUP register. Default setting is 'high' level.
Note
In case of an error, the sensor changes the selected PWM frequency.
Example: During normal operation the PWM frequency is 1 kHz, in case of
an error 500 Hz.
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DATA SHEET
HAL 371x, HAL 372x, HAL 373x
3.6. SENT Output
The SENT (Single-Edge Nibble Transmission) interface of HAL 373x is implemented
according to SAE J2716 release 2010-01.
Fig. 3–7 shows the general SENT protocol format. Every transmission starts with a low
pulse. The signal is transmitted by the sensor as a series of pulses, whereby the data
content is evaluated by time interval between falling edges.
The SENT telegram consists of a synchronization/calibration period, a status &
communication nibble, three data nibbles, and a CRC nibble and a pause period. See
Section 4.8. on page 33 for the timing parameters of a telegram.
All timing values in a SENT protocol are referenced to the clock tick time ttick.
After reset the output is recessive high. The transmission starts with a low pulse of the
synchronization phase (Fig. 3–7). Every low pulse has the same length specified by the
parameter tnlow. The synchronization period has always the same length of clock
cycles. The clock variation is included in the parameter tsync. The following status and
data nibbles always start with a low pulse with tnlow. The nibble high time of the status
tstat, the data td3,2,1 and the CRC tcrc depends on the transmitted value. Therefore, the
message time of a SENT message depends on the tick time and the value which is
transmitted by the message.
In order to synchronize the SENT messages to the measurement sampling rate an
additional pause period is added, which is transmitted after the checksum nibble.
The time to transmit one message is calculated by:
tmessage = tsync + tstat + td3 + td2 + td1+ tcrc
The checksum nibble is a 4 bit CRC of the data nibbles only. The status & communication
nibble is not included in the CRC calculation. The CRC is calculated using polynomial
x4+x3+x2+1 with seed value of 5. See SAE J2716 for further CRC implementation details.
As recommended by the SAE J2716 an additional zero nibble in addition to the 3 data
nibbles for the CRC calculation has been implemented. This is a safety measure
against common errors in the last data nibble and the checksum.
In HAL 373x the transmitted data nibbles are generated based on the DAC register value.
Special data codes have been implemented for error indication via the SENT interface.
The angular or linear position information is coded in the signal range from 2 ... 4087 LSB
in the 12 bit range. Table 3–5 gives an overview on the data nibble content.
HAL 373x is not using the status nibble for additional information transmission.
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HAL 371x, HAL 372x, HAL 373x
DATA SHEET
Table 3–5: Data Nibble Content SENT
12-bit value
Definition
4092 to 4095
Reserved
4091
Device Error: Device is failing in one of the self tests (EEPROM, ROM, DSP, Overvoltage)
4090
Signal Path Error: MAG-HIGH or -LOW are exceeded, adder overflow or clipping of channel 1 or 2
4089
Reserved
4088
Clamp-High: Upper signal range violation
2 to 4087
Angular or Position information
1
Clamp-Low: Lower signal range violation
0
During Initialization - Power Up
The SENT protocol starts after the initialization time of the sensor to ensure valid data
after power-up.
tnlow tnlow
tsync
PAUSE
(previous
telegram)
calibr. / synchron.
tnibble
tnibble
status
D[11:8]
tnibble
D[7:4]
tnibble
D[3:0]
tnibble
CRC
tnibble
PAUSE
tmessage
Fig. 3–7: SENT protocol format with 3 data nibbles and pause period
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HAL 371x, HAL 372x, HAL 373x
DATA SHEET
4. Specifications
4.1. Outline Dimensions
DETAIL Z
x
5
8
Bd
E
E1
y
center of sensitive
area
L
PIN 1 INDEX
4
1
e
A4
hx45°
D
bbb
A
c
b*
A1
A2
CO C
SEATING PLANE
C
Z
"D" and "E1" are reference data and do not include mold flash or protrusion.
Mold flash or protrusion shall not exceed 150 μm per side.
* does not include dambar protrusion of 0.1 max. per side
5
0
A4, Bd, x,y=these dimensions are different for each sensor type and are
specified in the data sheet
10 mm
scale
UNIT
A
A1
A2
b
bbb
c
CO
D
E
E1
e
h
L
Θ
mm
1.65
0.25
0.1
1.45
0.4
0.25
0.22
0.1
5.0
4.8
6.0
4.0
3.8
1.27
0.3
0.41
min.
8°
max.
JEDEC STANDARD
ISSUE
ITEM NO.
F
MS-012
ISSUE DATE
YY-MM-DD
DRAWING-NO.
ZG-NO.
09-07-21
06690.0001.4 Bl. 1
ZG001090_Ver.05
© Copyright 2009 Micronas GmbH, all rights reserved
Fig. 4–1:
SOIC8-1: Plastic Small Outline IC package, 8 leads, gullwing bent, 150 mil
Ordering code: DJ
Weight approximately 0.076 g
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HAL 371x, HAL 372x, HAL 373x
DATA SHEET
E1
A2
Bd
x
Center of
sensitive area
F1
D1
y
A3
1
2
3
4
L
F2
b
e
P
A4
c
0
physical dimensions do not include moldflash.
A4, Bd, x, y= these dimensions are different for each sensor type and are specified in the data sheet.
2.5
5 mm
scale
solderability is guaranteed between end of pin and distance F1.
Sn-thickness might be reduced by mechanical handling.
Due to delivery in ammopack, L is defined by the cutting process of the customer.
UNIT
A2
A3
b
c
D1
e
E1
F1
F2
P
mm
1.55
1.45
0.85
0.42
0.36
5.60
5.50
1.27
5.38
5.28
1.20
0.80
0.60
0.42
0.3x45°
JEDEC STANDARD
ANSI
ISSUE
ITEM NO.
-
-
ISSUE DATE
YY-MM-DD
DRAWING-NO.
ZG-NO.
11-07-08
06691.0001.4
ZG001091_001_04
© Copyright 2009 Micronas GmbH, all rights reserved
Fig. 4–2:
TO92UP: Plastic Transistor Standard UP package, 4 leads
Weight approximately 0.22 g
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HAL 371x, HAL 372x, HAL 373x
DATA SHEET
4.2. Soldering, Welding, Assembly
Information related to solderability, welding, assembly, and second-level packaging is
included in the document “Guidelines for the Assembly of Micronas Packages”.
It is available on the TDK-Micronas website (https://www.micronas.com/en/service-center/
downloads) or on the service portal (https://service.micronas.com).
4.3. Sensitive Area
4.3.1. Physical Dimension
275 µm x 275 µm
4.3.2. Definition of Magnetic Field Vectors
Bz
Bx
By
Fig. 4–3: Definition of magnetic field vectors for SOIC-8 package
BZ
BX
BY
FRONT VIEW
Fig. 4–4: Definition of magnetic field vectors for TO92-UP package
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HAL 371x, HAL 372x, HAL 373x
DATA SHEET
4.3.3. Package Parameters and Position
SOIC8-1
TO92UP-1
A4
0.38 mm nominal
0.45 mm nominal
Bd
0.3 mm
0.3 mm
x
0 mm nominal (center of package)
0 mm nominal (center of package)
y
0 mm nominal (center of package)
1.90 mm nominal
4.4. Pin Connections and Short Description
Pin No.
Pin Name
Type
Short Description
TO92UP
Package
SOIC8
Package
1
1
VSUP
SUPPLY
Supply Voltage Pin
2
2
Gnd
GND
Ground
3
3
TEST
IN
Test
4
4
OUT
I/O
Push-Pull Output and Programming Pin
5, 6, 7, 8
NC
GND
connect to GND
1
VSUP
OUT
4
2 GND 3 TEST
(5 - 8)
Fig. 4–5: Pin configuration
Note
It is recommended to connect the TEST pin with the GND pin.
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HAL 371x, HAL 372x, HAL 373x
DATA SHEET
4.5. Absolute Maximum Ratings
Stresses beyond those listed in the “Absolute Maximum Ratings” may cause permanent
damage to the device. This is a stress rating only. Functional operation of the device at
these conditions is not implied. Exposure to absolute maximum rating conditions for
extended periods will affect device reliability.
This device contains circuitry to protect the inputs and outputs against damage due to
high static voltages or electric fields; however, it is advised that normal precautions be
taken to avoid application of any voltage higher than absolute maximum-rated voltages
to this high-impedance circuit.
All voltages listed are referenced to ground (GND).
Symbol
Parameter
Pin No. Min.
Max.
Unit
Condition
VSUP
Supply Voltage
VSUP
20
20
V
t < 1 hr3)
VOUT
Output Voltage
VSUP
6
20
V
t < 1 hr3)
VOUT VSUP
Excess of Output Voltage
over Supply Voltage
OUT,
VSUP
2
V
IOUT
Continuous Output Current
OUT
10
10
mA
TJ
Junction Temperature under
Bias
50
190
°C
1)3)
TA
Ambient Temperature
40
160
°C
4)
Tstorage
Transportation/Short Term
Storage Temperature
55
150
°C
Device only without
packing material
Bmax
Magnetic Field
-
T
VESD
ESD Protection
VSUP,
OUT,
TEST,
GND,
NC
4
4
kV
2)3)
1)
For 96 h - Please contact TDK-Micronas for other temperature requirements
AEC-Q100-002 (100 pF and 1.5 k)
3) No cumulated stress
4) Consider current consumption, mounting condition (e.g. overmold, potting) and mounting situation
for TA in relation to TJ
2)
4.6. Storage and Shelf Life
Information related to storage conditions of Micronas sensors is included in the document
“Guidelines for the Assembly of Micronas Packages”. It gives recommendations linked to
moisture sensitivity level and long-term storage.
It is available on the TDK-Micronas website (https://www.micronas.com/en/service-center/
downloads) or on the service portal (https://service.micronas.com).
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HAL 371x, HAL 372x, HAL 373x
DATA SHEET
4.7. Recommended Operating Conditions
Functional operation of the device beyond those indicated in the “Recommended
Operating Conditions/Characteristics” is not implied and may result in unpredictable
behavior, reduce reliability and lifetime of the device.
All voltages listed are referenced to ground (GND).
Symbol
Parameter
Pin
No.
Min.
Typ.
Max.
Unit
Condition
VSUP
Supply Voltage
VSUP
4.5
5.7
5
6.0
5.5
6.5
V
Normal Operation
During Programming
IOUT
Continuous Output
Current
OUT
1.2
1.2
5.5
mA
mA
HAL 3715 and HAL 372x
HAL 3711 and HAL 373x
RL
Load Resistor
OUT
5
10
k
HAL 3715 and HAL 372x
pull-up & pull-down resistor
1
k
HAL 3711 and HAL 373x
pull-up resistor
CL
Load Capacitance
OUT
0.33
47
330
1
nF
nF
HAL 3715 and HAL 372x
HAL 3711 and HAL 373x
NPRG
Number of Memory
Programming
Cycles1)
-
-
-
100
cycles
0 °C < Tamb < 55 °C
BAMP
Recommended
Magnetic Field
Amplitude
-
20
-
100
mT
TJ
Junction
Temperature 2)
40
170
°C
TA
Ambient
Temperature 3)
40
150
°C
for 1000 hrs
1)
The EEPROM is organized in three banks. Each bank contains up to 32 addresses. It is not allowed to
program only one single address within one of the three banks. In case of programming one single
address the complete bank has to be programmed.
2) Depends on the temperature profile of the application. Please contact TDK-Micronas for life time calculations.
3)
Consider current consumption, mounting condition (e.g. overmold, potting) and mounting situation for TA
in relation to TJ
Note
It is also possible to operate the sensor with magnetic fields down to 5 mT.
For magnetic fields below 20 mT the sensor performance will be reduced.
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HAL 371x, HAL 372x, HAL 373x
DATA SHEET
4.8. Characteristics
at TA = 40 °C to 150 °C, VSUP = 4.5 V to 5.5 V, GND = 0 V, after programming and
locking of the sensor, at Recommended Operation Conditions if not otherwise specified
in the column “Conditions”.
Typical Characteristics for TJ = 25 °C and VSUP = 5 V.
Symbol
ISUP
tStartup
Parameter
Pin
No.
Limit Values
Min.
Typ.
Max.
Supply Current
over Temperature Range
VSUP
8
13
mA
Resolution 1)
OUT
12
bit
12
bit
OUT
1.7
ms
CL = 10 nF (see Fig. 4–6 on
page 36), LP-FILTER = OFF
VSUP
3.3
3.9
4.3
V
Functionality Mode: Normal
CUST_SETUP register bit 5
3.1
3.7
4.1
V
Functionality Mode: Extended
CUST_SETUP register bit 5
200
mV
5.6
6.2
6.9
V
Functionality Mode: Normal
8.5
9.5
10.4
V
Functionality Mode: Extended
CUST_SETUP register bit 5
225
mV
Start-up Time2)
Unit
Test Conditions
for HAL 3715/HAL 372x ratiometric to VSUP
for HAL 3711/HAL 373x
(depends on PWM Period)
Overvoltage and Undervoltage Detection
VSUP,UV
Undervoltage Detection
Level
VSUP,UVhyst
Undervoltage Detection
Level Hysteresis2)
VSUP,OV
Overvoltage Detection Level VSUP
VSUP,OVhyst
VSUP
Overvoltage Detection Level VSUP
Hysteresis2)
Output Voltage in Case of Error Detection
VSUP,DIAG
Supply Voltage required to
get defined Output Voltage
Level2)
VSUP
2.3
V
VError,Low
Output Voltage Range of
Lower Error Band2)
OUT
0
4
%VSUP VSUP > VSUP,DIAG
Analog Output
5 k RL200 k
VError,High
Output Voltage Range of
Upper Error Band2)
OUT
96
100
%VSUP VSUP > VSUP,DIAG
Analog Output
5 k RL 200 k
1)
2)
Output behavior see Fig. 4–7
Guaranteed by Design
Characterized on small sample size, not tested.
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HAL 371x, HAL 372x, HAL 373x
DATA SHEET
Symbol
Parameter
Pin
No.
Limit Values
Unit
Min.
Typ.
Max.
Test Conditions
Output Short Detection Parameter
tOCD
Over Current Detection
Time2)
OUT
128
µs
tTimeout
Time Period without Over
Current Detection2)
OUT
256
ms
IOVC
Detectable Output Short
Current2)
OUT
10
mA
OUT
0.312
0.343
ms
HAL 3715 and HAL 372x (Analog Output)
tOSD
Overall Signal Delay1)
Overall signal delay from
magnetic field input to sensor
output.
Based on 8 kHz sample
frequency
DNL
Differential Non-Linearity of
D/A converter
OUT
3
0
3
LSB
ER
Ratiometric Error of Output
over temperature
OUT
0.12
0
0.12
%
Max of [VOUT5 VOUT4.5 and
VOUT5.5 VOUT5] at VOUT =
10% and 90% VSUP
% of supply voltage
(Error in VOUT/VSUP)
INL
Non-Linearity of D/A converter
OUT
0.1
0
0.1
%
VOFFSET
D/A converter offset drift
over temperature range
related to 25 °C 2)
OUT
0.2
0
0.2
%VSUP
VOUTH
Output High Voltage 3)
OUT
93
%VSUP RL Pull-up/-down = 5 k
VOUTL
Output Low Voltage 3)
OUT
7
%VSUP RL Pull-up/-down = 5 k
VOUTCL
Accuracy of Output Voltage
at Clamping Low Voltage
over Temperature Range 2)
OUT
30
0
30
mV
VOUTCH
Accuracy of Output Voltage
at Clamping High Voltage
over Temperature Range 2)
OUT
30
0
30
mV
OUTNoise
Output Noise RMS 2)5)
OUT
2
5.2
mV
Output range 10% to 90%
ROUT
Output Resistance over
Recommended Operating
Range
OUT
1
10
VOUTLmax VOUT VOUTHmin
RL Pull-up/-down = 5 k
VSUP = 5V
1)
Guaranteed by Design
Characterized on small sample size, not tested.
3) Signal band area with full accuracy is located between V
OUTL and VOUTH. The sensors accuracy is reduced
below VOUTL and above VOUTH
5) 4 kHz digital low-pass filter (LP-Filter = off): 20 mT min. magnetic field amplitude; f
BW = 22.5 kHz
2)
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HAL 371x, HAL 372x, HAL 373x
DATA SHEET
Symbol
Parameter
Pin
No.
Limit Values
Min.
Typ.
Max.
OUT
0
0
0.15
Unit
Test Conditions
V
VSUP = 5 V
Open-Circuit Detection
VOUT
Output voltage at open
VSUP line
RL4) = 10 kto 200k
0
0
0.2
V
VSUP = 5 V
5 kRL4) < 10k
VOUT
Output voltage at open GND OUT
line
4.85
4.9
5.0
V
VSUP = 5 V
RL4) = 10 kto 200k
4.8
4.9
5.0
V
VSUP = 5 V
5 kRL4) < 10k
HAL 3711 and HAL 373x (Digital Output)
VOUTH
Output High Voltage
OUT
4.8
4.9
V
VSUP = 5 V
RL Pull-up/-down = 5 k
VOUTL
Output Low Voltage
OUT
0.1
0.2
V
VSUP = 5 V
RL Pull-up/-down = 5 k
0.4
0.65
V
2)
VSUP = 5 V
RL Pull-up = 1 k
trise
Rise Time of Digital Output2) OUT
0.2
0.4
µs
VSUP = 5 V, RL Pull-up = 1 k,
CL = 1 nF
tfall
Fall Time of Digital Output2) OUT
0.25
0.4
µs
VSUP = 5 V, RL Pull-up = 1 k,
CL = 1 nF
ROUT_DIG
On Resistance of Digital
Pull-Up Driver
OUT
100
200
tstartup
Start-up Time
OUT
1.3
1.7
ms
tOSD
Overall Signal Delay1)
OUT
0.312
0.343
ms
Overall signal delay from
magnetic field input to sensor
output. Transmission time of
selected PWM frequency to
be added. Based on 8 kHz
sample frequency.
OUTNoise
Output Noise RMS 2)5)
OUT
0.05
0.13
%
Output range 100% DC
fPWM
PWM Frequency
OUT
1800
900
450
180
2000
1000
500
200
2200
1100
550
220
Hz
Customer programmable
JPWM
RMS PWM Jitter 2)
OUT
1
2
LSB12
fPWM = 1 kHz
PWM Output
1)
Guaranteed by Design
Characterized on small sample size, not tested.
4) RL can be pull-up or pull-down resistor
5) 4 kHz digital low-pass filter (LP-Filter = off): 20 mT min. magnetic field amplitude; f
BW = 22.5 kHz
2)
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DATA SHEET
Symbol
Parameter
Pin
No.
Limit Values
Unit
Min.
Typ.
Max.
Test Conditions
SENT Output
tstartup
Start-up Time
OUT
1.3
1.7
ms
ttick
Clock Tick Time
OUT
2.75
µs
tnlow
Nibble Low Time
OUT
5
ttick
tsync
Calibration / Synchronization Period
OUT
56
ttick
tnibble
Status & Communication
Nibble, Data Nibbles and
CRC Nibble Period
OUT
12
27
ttick
tmessage
Message Time
OUT
116
176
ttick
tpause
Pause Period Time
OUT
12
-
70
ttick
115
K/W
Determined with a 1S1P board
110
K/W
Determined with a 2S2P board
33
K/W
Determined with a 1S1P board
198
K/W
Determined with a 1S0P board
146
K/W
Determined with a1S1P board
53
K/W
Determined with a 1S0P board
38
K/W
Determined with a1S1P board
tnibble = 12 + [status|data|CRC]
SOIC8 Package
Rthja
Thermal Resistance
Junction to Air1)
Rthjc
Thermal Resistance
Junction to Case1)
TO92UP Package
Rthja
Thermal Resistance
Junction to Air1)
Rthjc
Thermal Resistance
Junction to Case1)
1) (Self-heating
calculation see Section 5.1. on page 40)
VSUP
VSUP
final value
VOUT
tStartup
Fig. 4–6: POR timing
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Vout [V]
VSUP,DIAG
VSUP,UV
5
VSUP,OV
VSUP [V]
: Output Voltage will be between VSUP and GND
: CUST_SETUP Register Bit no. 7 set to 1
: CUST_SETUP Register Bit no. 7 set to 0
Fig. 4–7: Behavior of HAL 3715 and HAL 372x for different VSUP
Voltage [V]
5.0
Typ. 4.2 V
Typ. 2.3 V
VSUP
First PWM period shall be
disgarded. Might be invalid.
PWM high duty
PWM low duty
0
5.0
Error Band = 1
Customer Lock = 1
OUT
0
Drive Low
1/PWMF (2kHz-200Hz)
5.0
Drive High
Error Band = X
Customer Lock = 0
Or
Error Band = 0
Customer Lock = 1
OUT
0
1/PWMF (2kHz-200Hz)
tStartup
time
Start-up behavior
customer programmable
(high or low)
Fig. 4–8: Start-up behavior of HAL 3711 and HAL 373x with PWM output
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HAL 371x, HAL 372x, HAL 373x
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4.9. Magnetic Characteristics
at TA = 40 °C to 150 °C, VSUP = 4.5 V to 5.5 V, GND = 0 V, after programming and
locking of the sensor, at Recommended Operation Conditions if not otherwise specified
in the column “Conditions”.
Typical Characteristics for TJ = 25 °C and VSUP = 5 V.
Symbol
Parameter
Pin
No.
Min. Typ. Max. Unit
RANGE
Detectable angle range
OUT
0
360
°
res
Angle resolution
OUT
0.09
°
(3604096)
Elinxy
XY angle linearity error (on
output of CORDIC filter)
OUT
0.5
0.5
°
Min. BAMP = 30 mT,
X/Y angle linearity error over
temperature (on output of
CORDIC filter)
OUT
Absolute sensitivity mismatch on raw signals
between X/Y and Z channel
OUT
SenseXYZ
Sensitivity of X/Y and Z Hall
Plate
OUT
118
128
138
LSB/
mT
TA =25 C1)
SMmX/Y_Z
Thermal sensitivity mismatch
drift of calibrated signals
between X/Y and Z channel
OUT
2.5
2.5
%
over full temperature range
related to 25 C1)
SMmXY
Thermal sensitivity mismatch
drift of calibrated signals
between X and Y channel
OUT
2
2
%
over full temperature range
related to 25 C1)
OffsetXY
Offset of calibrated signals of
X or Y channel
OUT
20
20
LSB15
TA = 25 C1)
Offset of calibrated signal of Z
channel
OUT
OffsetXY
Offset drift of calibrated signals of X or Y channel
OUT
70
70
LSB15
over full temperature range
related to 25 C1)
OffsetZ
Offset drift of calibrated signals of Z channel
OUT
10
10
LSB15
over full temperature range
related to 25 C1)
SMmXYZlife
Relative sensitivity mismatch drift of calibrated signals between X or Y channel
and Z channel over life time
OUT
1.0
%
after 1000 h HTOL1)
OffsetXYlife
Offset drift of calibrated signals of X or Y channel
OUT
30
LSB15
after 1000 h HTOL1)
OffsetZlife
Offset drift of calibrated signal of Z channel
OUT
5
LSB15
after 1000 h HTOL1)
Elinxy
ASMmX/Y_Z
OffsetZ
Test Conditions
TA = 25 C1) 2)
1.2
1.2
1.7
1.7
3
10
3
+10
°
Min. BAMP = 30 mT1) 2)
Min. BAMP = 20 mT1) 2)
%
%
for SOIC8 package
for TO92UP package
TA = 25 C1)
Can be compensated in
customer application
12
12
LSB15
TA = 25 C1)
Can be compensated in
customer application
1) Characterized
2) Calculated
on sample base, 3-sigma values, not tested for each device
angular error based on characterization and not on single error summation
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DATA SHEET
HAL 371x, HAL 372x, HAL 373x
Fig. 4–9: Angular error versus magnetic field amplitude over full temperature range for devices
using X and Y magnetic field component (for digital output)
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5. Application Notes
5.1. Ambient Temperature
Due to the internal power dissipation, the temperature on the silicon chip (junction temperature TJ) is higher than the temperature outside the package (ambient temperature TA).
TJ = TA + T
The maximum ambient temperature is a function of power dissipation, maximum allowable
die temperature and junction to ambient thermal resistance (Rthja). With a maximum of 5.5
V operating supply voltage the power dissipation P is 0.0825 W per die. The junction to
ambient thermal resistance Rthja is specified in Section 4.8. on page 33.
The difference between junction and ambient air temperature is expressed by the following
equation:
At static conditions and continuous operation, the following equation applies:
T = P * RthjX
The X represents junction to air or case point.
Note
The calculated self-heating of the device is only valid for the Rth test boards.
Depending on the application setup the final results in an application environment might deviate from those values.
5.2. EMC and ESD
Please contact TDK-Micronas for detailed information on EMC and ESD results.
5.3. Application Circuit for HAL 3715 and HAL 372x
For EMC protection, it is recommended to connect one ceramic 47 nF capacitor each
between ground and the supply voltage, respectively the output voltage pin.
VSUP
HAL 3715
47 nF
OUT
HAL 372x
47 nF
GND
Fig. 5–1: Recommended application circuit for HAL 3715 and HAL 372x
Note
It is recommended to connect the TEST pin with the GND pin.
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HAL 371x, HAL 372x, HAL 373x
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5.4. Application Circuit for HAL 3711 and HAL 373x
PWM Output
In case of PWM output mode, it is recommended to connect one ceramic 47 nF capacitor
between ground and the supply voltage and one ceramic 1 nF capacitor between the output pin and ground for EMC protection.
VSUP
OUT
HAL373x
47 nF
1 nF
GND
Fig. 5–2: Recommended application circuit for HAL 3711 and HAL 373x in PWM mode
SENT Output
In case of SENT output mode, it is recommended to connect one ceramic 47 nF capacitor
between ground and the supply voltage and a filter structure at the output pin for EMC
protection as well for having a SENT standard compliant output slew rate.
Following two setups have been tested:
– C01 = 180 pF, C02 = 2.2 nF, R01 = 120
– C01 = 180 pF, C02 = 3.3 nF, R01 = 180
47 nF
VSUP
R01
OUT
HAL 373x
C02
C01
GND
Fig. 5–3: Recommended application circuit for HAL 373x
Note
It is recommended to connect the TEST pin with the GND pin.
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HAL 371x, HAL 372x, HAL 373x
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5.5. Measurement of a PWM Output Signal of HAL 3711 & HAL 373x
In case of the PWM output, the magnetic field information is coded in the duty cycle of
the PWM signal. The duty cycle is defined as the ratio between the high time “s” and the
period “d” of the PWM signal (see Fig. 5–4).
Note
The PWM signal is updated with the rising edge. Hence, for signal evaluation,
the trigger-level must be the rising edge of the PWM signal.
Out
d
s
VHigh
VLow
time
Update
Fig. 5–4: Definition of PWM signal
5.6. Recommended Pad Size SOIC8 Package
2.200
0.600
1.270
5.200
Dimensions in mm
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HAL 371x, HAL 372x, HAL 373x
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6. Programming of the Sensor
HAL 37xy features two different customer modes. In Application Mode the sensors
provide a ratiometric analog output voltage or a digital output signal (PWM or SENT). In
Programming Mode it is possible to change the register settings of the sensor.
After power-up the sensor is always operating in the Application Mode. It is switched
to the Programming Mode by a pulse at the sensor output pin.
6.1. Programming Interface
In Programming Mode HAL 37xy is addressed by modulating a serial telegram on the
sensors output pin. Both sensors answer with a modulation of the output voltage.
A logical “0” is coded as no level change within the bit time. A logical “1” is coded as a level
change of typically 50% of the bit time. After each bit, a level change occurs (see Fig. 6–1).
The serial telegram is used to transmit the EEPROM content, error codes and digital
values of the angle information from and to the sensor.
tbittime
tbittime
or
logical 0
tbittime
tbittime
or
logical 1
50%
50%
50%
50%
Fig. 6–1: Definition of logical 0 and 1 bit
A description of the communication protocol and the programming of the sensor is available in a separate document (HAL/HAR 37xy Programming Guide).
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HAL 371x, HAL 372x, HAL 373x
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Table 6–1: Telegram parameters (All voltages are referenced to GND.)
Symbol
Pin
No.
Limit Values
Min.
Typ.
Max.
Voltage for Output Low
Level during Programming through Sensor
Output Pin
OUT
0
0.2*VSUP V
Voltage for Output
High Level during Programming through
Sensor Output Pin
OUT
VSUPProgram
VSUP Voltage for
EEPROM & NVRAM
programming (during
Programming)
VSUP
tbittime
Protocol Bit Time
OUT
VOUTL
VOUTH
Parameter
Slew rate
OUT
Unit Test Conditions
0
1
V
0.8*VSUP
VSUP
V
for VSUP = 5 V
4
5.0
V
for VSUP = 5 V
5.7
6.0
6.5
V
Supply voltage for bidirectional communication via output pin as well as for 3-wire
communication via supply
voltage modulation
900
225
1000
250
1100
275
µs
µs
2
V/µs
Cust. programmable,
TJ = 25 °C
Bit 13 of Customer Setup = 0
Bit 13 of Customer Setup = 1
6.2. Programming Environment and Tools
For the programming of HAL 37xy during product development a programming tool including hardware and software is available on request. It is recommended to use the Micronas
tool kit (USB kit and Lab View Programming Environment) in order to facilitate the product
development. The details of programming sequences are also available on request.
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HAL 371x, HAL 372x, HAL 373x
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6.3. Programming Information
For production and qualification tests, it is mandatory to set the LOCK bit to one and the
POUT bit to zero after final adjustment and programming of HAL 37xy.
Before locking the device, it is recommended to read back all register values to ensure
that the intended data is correctly stored in the sensor’s memory. Alternatively, it is also
possible to cross-check the sensor output signal with the intended output behavior.
The success of the LOCK process shall be checked by reading the status of the LOCK
bit after locking.
It is also mandatory to check the acknowledge (first and second) of the sensor after each
write and store sequence to verify if the programming of the sensor was successful. Additionally it is mandatory to set the Diagnosis Latch bit to ensure that programming errors are
indicated by the second acknowledge. Additionally, CLAMP-LOW must be set to 100% in
case of HAL 3711 and HAL 373x. This bit must be set back to zero to avoid unintended
error indication during normal operation of the device. To enable debugging of the production line, it is recommended to read back the PROG_DIAGNOSIS register and the
DIAGNOSIS register in case of a missing second acknowledge. Please check
HAL/HAR 37xy Programming Guide for further details.
Electrostatic Discharges (ESD) may disturb the programming pulses. Please take precautions against ESD.
Note
Please check also the “HAL 37xy, HAR 37xy User Manual” and relevant
documentation for the USB-Kit. It contains additional information and instructions about the programming of the devices.
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DATA SHEET
HAL 371x, HAL 372x, HAL 373x
7. Document History
1. Advance Information: “HAL 372x, HAL 373x” Robust Programmable 2D Position Sensor Family
with Arbitrary Output Function”, Oct. 10, 2013, AI000171_001EN. First release of the advance
information.
2. Advance Information: “HAL 3715, HAL 372x, HAL 373x Robust Programmable 2D Position Sensor Family with Arbitrary Output Function”, June 26, 2014, AI000171_002EN. Second release of
the advance information.
Major changes:
– HAL 3715 added to the document
– Update of customer NVRAM table
– Adaptation of parameter Y for SOIC-8 package
– Adaptation of parameter L for TO92-UP package drawing
– Recommended application circuit for SENT output mode added
– Update of SENT interface timing
3. Preliminary Data Sheet: “HAL 3715, HAL 372x, HAL 373x Robust Programmable 2D Position
Sensor Family with Arbitrary Output Function”, Feb. 2, 2015, PDI000217_001EN. First release of
the preliminary data sheet.
Major changes:
– SOIC8 package drawing updated
– Magnetic characteristics table completed
– Electrical characteristics table completed
4. Data Sheet: “HAL 371x, HAL 372x, HAL 373x Robust Programmable 2D Position Sensor Family
with Arbitrary Output Function”, Oct. 27, 2017, DS000192_001EN. First release of the data sheet.
Major changes:
– Update of signal path diagram
– Recommendation added to connect TEST pin with GND pin
– Typing error in electrical characteristics table for parameter fPWM corrected
– Max. load capacitance for analog output reduced to 330 nF
– Product shelf life recommendations modified
– Ambient temperature specification added
– HAL 3711 device added
– Additional information about programming of the device added
– Change of some characteristics (like noise, signal path delay,...)
– Chart added showing the start-up behavior of HAL 3711 and HAL 373x
– Chart with showing start-up behavior of HAL 3715 and HAL 372x updated
– Removal of specification for sensitivity drift of vertical and horizontal Hall-Plates
– Ammopack drawing removed. This is part of the document “Sensors and Controllers: Ordering
Codes, Packaging, Handling”.
TDK-Micronas GmbH
Hans-Bunte-Strasse 19 D-79108 Freiburg P.O. Box 840 D-79008 Freiburg, Germany
Tel. +49-761-517-0 Fax +49-761-517-2174 E-mail: docservice@micronas.com Internet: www.micronas.com
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