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High-Performance Power and Hall-Effect Sensor ICs

A1373 and A1374
High-Precision, Output Pin-Programmable Linear Hall Effect Sensor ICs

Pin-Out or Package

Features and Benefits

  • 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-rail)
  • 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 package

Description

The A1373 and A1374 high precision linear Hall effect sensor ICs are sensitive, temperature stable, linear devices with externally programmable features. This device family incorporates a chopper-stabilized amplifier, voltage regulator, programming 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-potentiometer solutions. Key applications include: throttle position sensor ICs, pedal position sensor ICs, and suspension height sensor ICs.

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 coefficient, clamps, and polarity. The device 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 simplified.

These devices are available in the KB package, a 3-pin SIP (single inline package). The lead (Pb) free version has a 100% matte tin plated leadframe.

Functional Block Diagram

Functional Block Diagram

Complete Part Numbers
Part Number Package Type RoHS
Compliant
Part Composition/
RoHS Data
Temperature Comments Samples Distributor Stock
A1373EKB-T 3-pin SIP Yes view data -40 °C to  85 °C   Contact Local Sales Representative
or check distributor stock
A1373EKBTI-T 3-pin SIP -- -- -40 °C to  85 °C   Contact Local Sales Representative
or check distributor stock
 
A1373LKB-T 3-pin SIP Yes view data -40 °C to  150 °C   Contact Local Sales Representative
or check distributor stock
A1373LKBTI-T 3-pin SIP Yes view data -40 °C to  150 °C   Contact Local Sales Representative
or check distributor stock
 
A1374EKB-T 3-pin SIP Yes view data -40 °C to  85 °C   Contact Local Sales Representative
or check distributor stock
A1374EKBTI-T 3-pin SIP -- -- -40 °C to  85 °C   Contact Local Sales Representative
or check distributor stock
 
A1374LKB-T 3-pin SIP Yes view data -40 °C to  150 °C   Contact Local Sales Representative
or check distributor stock
A1374LKBTI-T 3-pin SIP -- -- -40 °C to  150 °C   Contact Local Sales Representative
or check distributor stock
 

Allegro's products are not to be used in life support devices or systems, if a failure of an Allegro product can reasonably be expected to cause the failure of that life support device or system, or to affect the safety or effectiveness of that device or system.

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