AFL-Series Digital Magnetic Sensors
Low Voltage, Low Power Digital Magnetic Sensors
Functional Diagrams
Features
• Digital outputs
• Low power
• Precision magnetic operate points as low as 4 Oe (0.4 mT)
• Versions for 1 V through 5 V nominal supplies
• Omnipolar response
• Temperature and voltage stability
• Frequency response to 100 kHz
• TDFN6 and MSOP8 packages
VDD
Out
GMR
Sensor
Element
Comparator
Applications
• Motion, speed, and position control
• Proximity sensing
• Portable instruments
• Utility meters
• Noncontact overcurrent protection
• Battery-powered applications
GND
Sinking Output Versions
(AFLx0x-xx/AFLx1x-xx)
VDD
GMR
Sensor
Element
Description
AFL-Series Sensors are GMR digital switches designed to
run at low voltages and currents. Versions are available that
can operate from single-cell batteries. The outputs switch at
specified magnetic fields, and return when the fields are
removed.
Comparator
The sensors are three-terminal devices, available with either
current-sinking or sourcing outputs, normally off or
normally on configurations, and several supply voltage
options.
Out
GND
Sourcing Output Versions
(AFLx2x-xx/AFLx3x-xx)
Idealized Transfer Functions
On
Off
Off
Field
Normally Off
(AFLx0x-xx/AFLx3x-xx)
Normally On
(AFLx1x-xx/AFLx2x-xx)
1
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.nve.com
©NVE Corporation
AFL-Series Digital Magnetic Sensors
Absolute Maximum Ratings
Parameter
Operating temperature
Storage temperature
ESD (Human Body Model)
Applied magnetic field
Symbol
Min.
−20
−65
HMAX
Max.
85
150
2000
Unlimited
Units
°C
°C
Volts
Oe
Operating Specifications
Parameter
Supply voltage
Operating temperature
Magnetic operate point
AFLxx0-xx
AFLxx1-xx
AFLxx2-xx
AFLxx5-xx
AFLxx6-xx
Operate/release differential
AFLxx0-xx
AFLxx1-xx
AFLxx2-xx
AFLxx5-xx
AFLxx6-xx
Supply current
Over specified Vcc and temperature range otherwise stated.
Symbol
Min.
Typ.
Max.
Vcc
See table of available parts.
TMIN; TMAX
−20
85
7
15
21
4
3
HOP
1
3
3
4
1
HOP−HREL
AFL00x-xx
AFL02x-xx
AFL03x-xx
AFL10x-xx
AFL20x-xx
AFL30x-xx
Output current
Sinking (AFLx0x-xx/AFLx1x-xx)
Output
voltage Sourcing (AFLx2x-xx/AFLx3x-xx)
Output leakage current
Frequency response
Junction–Ambient Thermal Resistance
(TDFN6 or MSOP8 package)
ICC
IO-ON
VOL
VOH
IO-OFF
fMAX
10
20
28
7
4
Oe*
6
10
10
10
3
Oe*
35
55
30
15
25
30
30
100
50
35
35
35
40
75
55
45
45
50
Test Condition
°C
13
25
34
10
6
20
Max. ICC specified
at Vcc = 1.3V
Over specified Vcc
µA
µA
0.2
VCC−0.15
0.1
θJA
Units
V
100
µA
kHz
320
°C/W
Output Off
Soldered to doublesided board;
free air
*1 Oe = 0.1 mT in air.
2
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.nve.com
©NVE Corporation
AFL-Series Digital Magnetic Sensors
Operation
Plane and Direction of Magnetic Sensitivity
As the field varies in intensity, the digital output will turn on and off. Unlike Hall effect or other sensors, the direction of
sensitivity is in the plane of the package. Standard AFL-Series sensors are sensitive “cross-axis,” that is, across the pins from pin 1
to pin 6 or 8.The diagrams below show two magnet orientations that will activate the sensor in the direction of sensitivity:
Figure 1. Plane and direction of magnetic sensitivity
Omnipolar
GMR sensors are generally “omnipolar,” meaning the outputs turn ON when a magnetic field of either magnetic polarity is applied.
Normally OFF and Normally ON Versions
For normally OFF versions, the output turns ON when the field exceeds the magnetic operate point, and OFF when the field drops
below the operate point minus the release differential. Normally ON versions turn OFF when the field exceeds the operate point
and ON when it drops below the operate point minus the differential.
External Pull-Up Resistor
AFL-Series outputs are open collector, with PNP output transistors for sourcing versions and NPN transistors for sinking versions.
Outputs should have external pull-up or pull-down resistors. For microcontroller interfaces, the microcontroller’s input pull-up
resistors can be activated.
Typical Operation
A typical proximity sensor using an AFL006 sensor and magnet is shown below. TheAFL006is the most sensitive magnetic
switch, with a 4 Oe typical operate point, and actuates with a rare-earth magnet at more than two inches (50 mm) from the sensor:
AG035-06 circuit board
AFL006 sensor
Magnet
Figure 2. The AFL006sensor activates at approximately 58 mm.
Smaller or weaker magnets can be used for closer operating distances. Because AFL-Series sensors are omnipolar, the sensor
operates with either a north or south magnet pole.
Our free, Web-based application that calculates fields and operating distances for various sensor models and magnet types:
www.nve.com/spec/calculators.php
3
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.nve.com
©NVE Corporation
AFL-Series Digital Magnetic Sensors
Part Numbering
The following example shows the AFL-Series part-numbering system:
AFL 000 - 00E
Base Part
Supply Voltage
AFL = Low-voltage, 0 = 0.9 V – 2 V
low power
1 = 1.8 V – 2.5 V
digital switches
2 = 2.7 V – 3.6 V
3 = 4.5 V – 5.5 V
Output
0 = Normally Off; Sink
1 = Normally On; Sink
2 = Normally On; Source
3 = Normally Off; Source
Magnetic Operate Point
0 = 10 Oe
1 = 20 Oe
2 = 28 Oe
3 = 40 Oe
5 = 7 Oe
6 = 4 Oe
Package Type
00 = MSOP8
01 = IC only
10 = TDFN6
E = RoHS
Pinouts
MSOP8TDFN6TDFN6
(-00 suffix)(AFLxx6-10)(Other -10 suffix)
Vcc
OUT
N/C
GND
N/C
N/C
N/C
N/C
N/C
Vcc
Vcc
OUT
N/C
N/C
N/C
GND
GND
Out
N/C
N/C
Direction of
Sensitivity
Pin
MSOP8
(all
part types)
1
7
8
2, 3, 4, 5, 6
AFLxx6
6
3
4
1, 2, 5
TDFN6
AFLxx0 /AFLxx1/
AFLxx2/AFLxx5
1
5
6
2, 3, 4
Symbol
VCC
GND
OUT
N/C
Description
Power supply
Ground
Output (open collector)
No internal connection
4
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.nve.com
©NVE Corporation
AFL-Series Digital Magnetic Sensors
Product Range Charts
AFLxx6
3 V Lithium Cell
AFL3xx
AFLxx5
Sensitivity
1.5 V Alkaline Cell
AFL2xx
AFL1xx
AFLxx0
AFLxx1
AFLxx2
AFL0xx
0
0.9
1.8 2 2.5 2.7
3.6
4.5
0
5.5
Operating Voltage Range (V)
4
7
10
20
28
Magnetic Operate Point (Oe)
Available Parts
Available
Part
AFL000-00E
AFL000-10E
AFL001-10E
AFL002-10E
AFL005-10E
AFL006-10E
AFL020-00E
AFL030-00E
AFL100-00E
AFL100-10E
AFL200-00E
AFL300-00E
Supply
Voltage
0.9 V – 2 V
0.9 V – 2 V
0.9 V – 2 V
0.9 V – 2 V
0.9 V – 2 V
0.9 V – 2 V
0.9 V – 2 V
0.9 V – 2 V
1.8 V – 2.5 V
1.8 V – 2.5 V
2.7 V – 3.6 V
4.5 V – 5.5 V
Output Type
Normally Off
Normally Off
Normally Off
Normally Off
Normally Off
Normally Off
Normally On
Normally Off
Normally Off
Normally Off
Normally Off
Normally Off
Output
Source/Sink
Sink
Sink
Sink
Sink
Sink
Sink
Source
Source
Sink
Sink
Sink
Sink
Nominal
Operate Point*
10Oe
10Oe
20Oe
28 Oe
7 Oe
4 Oe
10 Oe
10 Oe
10 Oe
10 Oe
10 Oe
10 Oe
Package
MSOP8
TDFN6
TDFN6
TDFN6
TDFN6
TDFN6
MSOP8
MSOP8
MSOP8
TDFN6
MSOP8
MSOP8
Package
Marking
PBBe
QBBe
QBXe
QBLe
QBKe
QCHe
PBCe
PBDe
PBFe
QBFe
PBGe
PBHe
5
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.nve.com
©NVE Corporation
AFL-Series Digital Magnetic Sensors
Bare Circuit Boards for Sensors
NVE offers several bare circuit boards specially designed for easy connections to surface-mount sensors. Popular PCBs are shown
below (images are two times actual size):
1 8
2
7
6
3
4 5
AG915-06:
0.25" (6 mm) octagonal
MSOP8
AG918-06 (standard) / AG919-06 (cross-axis):
2" x 0.25" (50mm x 6 mm) MSOP8
AG035-06:
1.57" x 0.25" (40mm x 6 mm) TDFN6
6
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.nve.com
©NVE Corporation
AFL-Series Digital Magnetic Sensors
Package Drawings
MSOP8 (-00 suffix)
0.114 (2.90)
0.122 (3.10)
0.016 (0.40)
0.027 (0.70)
0.114 (2.90)
0.122 (3.10)
0.189 (4.80)
0.197 (5.00)
0.032 (0.80)
0.043 (1.10)
0.024 (0.60)
0.028 (0.70)
0.005 (0.13)
0.009 (0.23)
0.010 (0.25)
0.016 (0.40)
0.002 (0.05)
0.006 (0.15)
NOTE: Pin spacing is a BASIC
dimension; tolerances
do not accumulate
TDFN6 (-10 suffix)
2.00 ± 0.05
0.80 MAX.
6
4
6
2.50±0.10
1.30±0.05
4
C0.10
PIN 1
ID
1
1
3
3
2.50 ± 0.10
0.0-0.05
0.30±0.05
(6X)
0.30±0.05
0.65 TYP.
(4X)
1.30 REF (2X)
0.20 REF
RoHS
COMPLIANT
Soldering profile per JEDEC J-STD-020C, MSL 1.
7
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.nve.com
©NVE Corporation
AFL-Series Digital Magnetic Sensors
Revision History
SB-00-015-D
October 2017
Change
• Added “typical operation” description and illustration (p. 3).
• Added product range charts (p. 5).
• Added page with bare circuit boards (p. 6).
SB-00-015-C
June 2017
Change
• Added AFL006 high-sensitivity version.
• Increase maximum supply voltage for AFL0xx to 2 V.
SB-00-015-B
March 2017
Change
• Cosmetic datasheet changes.
SB-00-015-A
June 2007
Change
• Initial release.
8
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.nve.com
©NVE Corporation
AFL-Series Digital Magnetic Sensors
Datasheet Limitations
The information and data provided in datasheets shall define the specification of the product as agreed between NVE and its customer, unless NVE and
customer have explicitly agreed otherwise in writing. All specifications are based on NVE test protocols. In no event however, shall an agreement be
valid in which the NVE product is deemed to offer functions and qualities beyond those described in the datasheet.
Limited Warranty and Liability
Information in this document is believed to be accurate and reliable. However, NVE does not give any representations or warranties, expressed or
implied, as to the accuracy or completeness of such information and shall have no liability for the consequences of use of such information.
In no event shall NVE be liable for any indirect, incidental, punitive, special or consequential damages (including, without limitation, lost profits, lost
savings, business interruption, costs related to the removal or replacement of any products or rework charges) whether or not such damages are based on
tort (including negligence), warranty, breach of contract or any other legal theory.
Right to Make Changes
NVE reserves the right to make changes to information published in this document including, without limitation, specifications and product descriptions
at any time and without notice. This document supersedes and replaces all information supplied prior to its publication.
Use in Life-Critical or Safety-Critical Applications
Unless NVE and a customer explicitly agree otherwise in writing, NVE products are not designed, authorized or warranted to be suitable for use in life
support, life-critical or safety-critical devices or equipment. NVE accepts no liability for inclusion or use of NVE products in such applications and such
inclusion or use is at the customer’s own risk. Should the customer use NVE products for such application whether authorized by NVE or not, the
customer shall indemnify and hold NVE harmless against all claims and damages.
Applications
Applications described in this datasheet are illustrative only. NVE makes no representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Customers are responsible for the design and operation of their applications and products using NVE products, and NVE accepts no liability for any
assistance with applications or customer product design. It is customer’s sole responsibility to determine whether the NVE product is suitable and fit for
the customer’s applications and products planned, as well as for the planned application and use of customer’s third party customers. Customers should
provide appropriate design and operating safeguards to minimize the risks associated with their applications and products.
NVE does not accept any liability related to any default, damage, costs or problem which is based on any weakness or default in the customer’s
applications or products, or the application or use by customer’s third party customers. The customer is responsible for all necessary testing for the
customer’s applications and products using NVE products in order to avoid a default of the applications and the products or of the application or use by
customer’s third party customers. NVE accepts no liability in this respect.
Limiting Values
Stress above one or more limiting values (as defined in the Absolute Maximum Ratings System of IEC 60134) will cause permanent damage to the
device. Limiting values are stress ratings only and operation of the device at these or any other conditions above those given in the recommended
operating conditions of the datasheet is not warranted. Constant or repeated exposure to limiting values will permanently and irreversibly affect the
quality and reliability of the device.
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In case an individual agreement is concluded only the terms and conditions of the respective agreement shall apply. NVE hereby expressly objects to
applying the customer’s general terms and conditions with regard to the purchase of NVE products by customer.
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This document as well as the items described herein may be subject to export control regulations. Export might require a prior authorization from national authorities.
Automotive Qualified Products
Unless the datasheet expressly states that a specific NVE product is automotive qualified, the product is not suitable for automotive use. It is neither
qualified nor tested in accordance with automotive testing or application requirements. NVE accepts no liability for inclusion or use of non-automotive
qualified products in automotive equipment or applications.
In the event that customer uses the product for design-in and use in automotive applications to automotive specifications and standards, customer (a) shall
use the product without NVE’s warranty of the product for such automotive applications, use and specifications, and (b) whenever customer uses the
product for automotive applications beyond NVE’s specifications such use shall be solely at customer’s own risk, and (c) customer fully indemnifies
NVE for any liability, damages or failed product claims resulting from customer design and use of the product for automotive applications beyond NVE’s
standard warranty and NVE’s product specifications.
9
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.nve.com
©NVE Corporation
AFL-Series Digital Magnetic Sensors
An ISO 9001 Certified Company
NVE Corporation
11409 Valley View Road
Eden Prairie, MN 55344-3617 USA
Telephone: (952) 829-9217
www.nve.com
www.youtube.com/nveCorporation
e-mail: sensor-info@nve.com
©NVE Corporation
All rights are reserved. Reproduction in whole or in part is prohibited without the prior written consent of the copyright owner.
SB-00-015_RevD
October 2017
10
NVE Corporation
11409 Valley View Road, Eden Prairie, MN 55344-3617
Phone: (952) 829-9217
Fax: (952) 829-9189
www.nve.com
©NVE Corporation