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

Description

This device is no longer in production. The device should not be purchased for new design applications. Samples are no longer available.

Date of status change: October 31, 2011.

Recommended substitution: For existing customer transition, and for new customers or new applications, contact Allegro Sales.

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.

Top 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-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

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check Stock
A1373EKB-T 3-lead SIP -40°C to 85°C Yes View Data Discontinued Contact your
local sales rep
Check
Distributor Stock
A1373EKBTI-T 3-lead SIP -40°C to 85°C -- View Data Discontinued Contact your
local sales rep
Check
Distributor Stock
A1373LKB-T 3-lead SIP -40°C to 150°C Yes View Data Discontinued Contact your
local sales rep
Check
Distributor Stock
A1373LKBTI-T 3-lead SIP -40°C to 150°C Yes View Data Discontinued Contact your
local sales rep
Check
Distributor Stock
A1374EKB-T 3-lead SIP -40°C to 85°C Yes View Data Discontinued Contact your
local sales rep
Check
Distributor Stock
A1374EKBTI-T 3-lead SIP -40°C to 85°C -- View Data Discontinued Contact your
local sales rep
Check
Distributor Stock
A1374LKB-T 3-lead SIP -40°C to 150°C Yes View Data Discontinued Contact your
local sales rep
Check
Distributor Stock
A1374LKBTI-T 3-lead SIP -40°C to 150°C -- View Data Discontinued Contact your
local sales rep
Check
Distributor Stock

Allegro’s products are not to be used in any devices or systems, including but not limited to life support devices or systems, in which a failure of Allegro’s product can reasonably be expected to cause bodily harm.

Packaging

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.

Package