Customer Programmable Linear Hall-Effect Sensor Optimized for Use in Current Sensing Applications

A1369

Allegro 3-Pin SIP UA Package

Description

Top Features

Packaging

The Allegro™ A1369 is a customer programmable, high accuracy linear Hall effect-based current sensor IC. It is packaged in a thin 3-pin SIP package to allow for easy integration with a magnetic core to create a highly accurate current sensing module. The programmable nature of the A1369 enables it to account for manufacturing tolerances in the final current sensing module assembly.

This temperature-stable device is available in a through-hole single in-line package (TO-92). The accuracy of the device is enhanced via programmability on the output pin for end-of-line optimization without the added complexity and cost of a fully programmable device. The device features One-Time-Programming (OTP), using non-volatile memory, to optimize device sensitivity and the quiescent output voltage (QVO) (output with no magnetic field) for a given application or circuit. The A1369 also allow for optimized performance over temperature through programming the temperature coefficient for both Sensitivity and QVO at Allegro end-of-line test.

These ratiometric Hall effect sensors provide a voltage output that is proportional to the applied magnetic field. The quiescent voltage output is user-adjustable around 50% of the supply voltage, and the output sensitivity is programmable within a range of –8.5 mV/G to –12.5 mV/G for the A1369-10 and –22 mV/G to –26 mV/G for the A1369-24.

The features of this linear device makes it ideal for use in industrial applications requiring high accuracy and are guaranteed over a wide temperature range, –40°C to+85°C.

  • Customer programmable offset, and sensitivity
  • Sensitivity and QVO temperature coefficients programmed at Allegro for improved accuracy
  • Output value decreases with South Magnetic Field and increases with North Magnetic field.
  • 3-pin SIP package for easy integration with magnetic concentrator
  • Low noise, moderate bandwidth, analog output
  • High speed chopping scheme minimizes QVO drift over temperature
  • Temperature-stable quiescent voltage output and sensitivity
  • Precise recoverability after temperature cycling
  • Output voltage clamps provide short circuit diagnostic capabilities
  • Under voltage lock-out (UVLO)
  • Wide ambient temperature range: -40ºC to +85ºC
  • Immune to mechanical stress

The Allegro™ A1369 is packaged in a thin 3-pin SIP package to allow for easy integration with a magnetic core to create a highly accurate current sensing module.

UA Package Documentation

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Documentation

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Core Design for Field DC Current Sensors
Simulation Tool
Current Sensor Error and Resolution
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ACS LTspice Library