The ES1222 is a Latch Hall effect sensor IC
RoHS Compliant: (EU)2015/863
fabricated from BCD technology. The device integrates
a voltage regulator, Hall sensor with dynamic offset
cancellation system, Schmitt trigger and an open-drain
Automotive, Consumer and Industrial
output driver with over-current protection, all in a single
Solid-state switch
package.
Brushless DC motor commutation
It incorporates advanced chopper stabilization
Speed detection
techniques to provide accurate and stable magnetic
Linear position detection
switch points. There are many applications for this
Angular position detection
sensor in addition to those listed above. The design,
Proximity detection
specifications and performance have been optimized
for commutation applications in 5V to 12V brushless
DC motors.
Thanks to its wide operating voltage range and
extended choice of temperature range, it is quite
suitable for use in automotive, industrial and consumer
applications.
The device is delivered in a Small Outline
Transistor (SOT/DFN) for surface mount process and in
a Plastic Single In Line (TO-92 flat) for through- hole
mount. Both 3-lead packages are RoHS compliant.
ES1222
SO Pin
No.
UA Pin
No.
Name
Type
Function
1
1
VDD
Supply
Supply Voltage Pin
2
3
OUT
Output
Open Drain Output
Pin
3
2
GND
Ground
Ground Pin
Operating voltage range from 2.8V to 24V
High magnetic sensitivity – +/-15GS
BCD technology
-28V Reversed Power Supply Protection
-40℃~150℃ Operating Temperature
Output Limiting Current Protection
Output driver with internal pull-up resistor
on) when a magnetic field perpendicular to the Hall
ESD
sensor exceeds the operate point threshold, BOP. After
The ES1220 exhibits latch magnetic switching
characteristics. Therefore, it requires both south and
north poles to operate properly.
The OUT pin of these devices switches low (turns
4KV
turn-on, the output voltage is VDSon. Note that the device
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latches, that is, a south pole of sufficient strength
towards the branded surface of the device turns the
device on. The device remains on if the south pole is
removed (B→0). This latching property defines the
device as a magnetic memory.
Based on BCD technology, InnoSen ES1220 is a
Hall-effect device with high magnetic sensitivity. This
multi-purpose latch suits most of the application
requirements.
The chopper-stabilized amplifier uses switched
capacitor technique to suppress the offset generally
observed with Hall sensors and amplifiers. The CMOS
technology makes this advanced technique possible
and contributes to smaller chip size and lower current
consumption than bipolar technology. The small chip
size is also an important factor to minimize the effect of
physical stress. This combination results in more stable
When the magnetic field is reduced below the
release point, BRP, the OUT pin turns off (goes high).
magnetic characteristics and enables faster and more
precise design.
The difference in the magnetic operate and release
points is the hysteresis, BHYS, of the device. This built-in
hysteresis
prevents
output
oscillation
near
the
switching point, and allows clean switching of the
output even in the presence of external mechanical
vibration and electrical noise.
The operating voltage from 2.8V to 24V, low current
consumption and large choice of operating temperature
range according to “L”, and “E” specification make this
device suitable for automotive, industrial and consumer
applications.
The device behaves as a latch with symmetric
operating and release switching points (BOP=|BRP|).
Parameter
Symbol
Value
Units
Supply Voltage
VDD
42
V
Reverse Battery Voltage
VRCC
-42
mA
Output Voltage
VOUT
42
V
Continuous Output Current
IOUT
30
mA
Operating Temperature Range
TO
-40 ~ 150
℃
Storage Temperature Range
TS
-50 ~ 150
℃
Maximum Junction
Temperature
TJ
165
℃
Output clamp current
Iocp
60
mA
The electrostatic capacity
ESD
4
KV
Symbol
Value
Units
Temperature Suffix “E”
TA
-40 ~ 85
℃
Temperature Suffix “L”
TA
-40 ~ 150
℃
This means magnetic fields with equivalent strength
and opposite direction drive the output high and low.
Powering-on the device in the hysteresis region
Operating Temperature
Range
(less than BOP and higher than BRP) allows an
indeterminate output state. The correct state is attained
after the first excursion beyond BOP or BRP.
The SOT-23 device is reversed from the UA and
DFN package. The SOT-23 output transistor will be
latched on in the presence of a sufficiently strong North
pole magnetic field applied to the marked face.
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Note: Exceeding the absolute maximum ratings may
cause
permanent
damage.
Exposure
to
absolute-maximum- rated conditions for extended
periods may affect device reliability.
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DC Operating Parameters Ta = 25℃,VDD= 3V to 24V
Parameter
Symbol
Test Conditions
Min
Typ
Supply Voltage
VDD
Operating
2.8
Supply Current
IDD
B < BRP
Output Saturation Voltage
VDSon
IOUT = 20mA, B > BOP
Output Leakage Current
IOFF
B BOP
Low
B < BRP
High
ES1222
Performance Characteristics
It is strongly recommended that an external
bypass capacitor be connected (in close proximity to
the Hall sensor) between the supply (VDD Pin) and
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0.75
1.52 ± 0.02
1.96
3° ± 1°
0.89
45° ± 1°
4.0 ± 0.1
3.90
3
4
3
1
2
3
6° ±1°
3° ± 1°
6° ±1°
Notes:
14.5 ± 1
2
1
2
3
3° ± 1°
1.6
0.05 ± 0.05
3.90
0.39
1
2
3
3.0 ± 0.1
ES22
xxxx
0.44
3.90
2
3
1
4
2
3
Sensor Location
3
1
2
3
Active Area Depth: 0.84(Nom)
1
2
3
1). Controlling dimension: mm;
2). Leads must be free of flash and plating voids;
3). Do not bend leads within 1 mm of lead to package interface;
4). PINOUT: Pin 1 VDD
Pin 2 GND
Pin 3 Output
Marking:
ES22 -- Code of Device (ES1222);
1.27
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XXXX -- Production Lot;
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Top View
Notes:
1). PINOUT:
Pin 1 VDD
Pin 2 Output
Pin 3 GND
2). All dimensions are in millimeters;
3
22XXX
1
1.50 2.65
1.70 2.95
Marking:
22 -- Code of Device (ES1222);
XXX -- Production Lot;
2
1.80
2.00
Side View
End View
2.82
3.02
0.10
0.20
3.00
1.05
1.15
3.00
0.70
0.90
3.00
0.00
0.10
3.00
0.30
0.50
3.00
0.30
0.60
3.00
Bottom View of SOT-23 Package
3
Chip
0.56
0.66
0.85
0.75
2
3
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1
2
1.50
3
1.40
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22XXX
Part No.
Temperature Suffix
Package Code
SO (SOT23-3L)
E ( -40℃ ~ 85℃)
DF(DFNWN1616-6L)
UA (TO-92S)
ES1222
SO (SO23T-3L)
L ( -40℃ ~ 150℃)
DF(DFNWB1616-6L)
UA (TO-92S)
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