Features: Output pin programming
Field-programmable for optimal application integration
Selectable coarse and fine gain and quiescent output voltage
Selectable sensitivity temperature coefficient
Selectable output clamp voltage level, including no-clamp (rail-to-ra
Selectable output polarity
Unipolar or bipolar operation
Ratiometric sensitivity, clamps, and quiescent output voltage
Chopper-stabilized Hall technique
Wide operating temperature range
On-chip regulator for over/under voltage protection
On-chip regulator provides EMI robustness
Wide lead-spacing with KB packageSpecificationsSupply Voltage, VCC ..........................................16 V
Reverse-Supply Voltage, VRCC .......................16 V
Output Voltage1, VOUT......................................16 V
Reverse-Output Voltage, VROUT ...................0.1 V
Output Current
Source, IOUTSOURCE ..................................... 3 mA
Sink, IOUTSINK.............................................. 10 mA
Operating Temperature
Ambient, TA, Range E.......................40ºC to 85ºC
Ambient, TA, Range L.....................40ºC to 150ºC
Maximum Junction, TJ(max)............................165ºC
Storage Temperature, TS ..............65ºC to 170ºCDescriptionThe A1373 and A1374 high precision linear Hall effect sensors are sensitive, tem- perature stable, linear devices with externally programmable features. A1373 and A1374 family incorporates a chopper-stabilized amplifier, voltage regulator, program- ming logic, and an output amplifier on a single IC. The patented dynamic offset cancellation used with a chopper-stabilization technique provides extremely low offset and minimal temperature drift. A high frequency clock is used for chopping, to ensure high frequency signal processing capability. The A1373 and A1374 are ideal for use in automotive and industrial linear position-sensing applications that require increased reliability and accuracy over conventional contacting-potentiom- eter solutions. Key applications include: throttle position sensors, pedal position sensors, and suspension height sensors.
The design and manufacturing flexibility of the A1373 and A1374 complement the Allegro linear Hall effect family of devices by offering programmable gain, quiescent offset voltage for unipolar or bipolar operation, temperature coef- ficient, clamps, and polarity. The A1373 and A1374 can be set up in a magnetic circuit and programmed with a train of serial pulses via the output pin. Once the right combination of gain, quiescent output voltage, and temperature coefficient has been selected, the codes can be locked for one-time programming. In this manner, manufacturing tolerances can be reduced and the assembly process can be simpli- fied.
A1374 Data Sheet
