A1381, A1383, and A1384: Programmable Linear Hall Effect Sensor ICs with Analog Output Available in a Miniature Thin Profile Surface Mount Package

Description

New applications for linear output Hall effect sensing, such as displacement, angular position, and current measurement, require high accuracy in conjunction with small package size. The Allegro A138x family of programmable linear Hall effect sensor ICs was designed specifically to achieve both goals. These temperature-stable devices are available in a miniature surface mount package (SOT23-W) and an ultramini throughhole single-in-line package. The accuracy of these devices is enhanced via programmability on the output pin for end-of-line optimization without the added complexity and cost of a fully programmable device.

These ratiometric Hall effect devices provide a voltage output that is proportional to the applied magnetic field. Both the quiescent voltage output and magnetic sensitivity are useradjustable. The quiescent voltage output can be set around 50% of the supply voltage, and the sensitivity adjusted between 2 mV/G and 9 mV/G over the device family. Programming selections also exist for output polarity and temperature compensation. The features of this linear family make it ideal for high accuracy requirements of automotive and industrial applications, and performance is guaranteed over an extended temperature range, –40°C to 150°C.

Each BiCMOS monolithic circuit integrates a Hall element, temperature-compensating circuitry to reduce the intrinsic sensitivity drift of the Hall element, a small-signal high-gain amplifier, a clamped low-impedance output stage, and a proprietary dynamic offset cancellation technique.

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: December 1, 2015.

Recommended Substitutions: For existing customer transition, and for new customers or new applications, refer to the A1389 family; consult factory for details.

Top Features

  • Customer programmable offset, sensitivity, sensitivity temperature coefficient, and polarity
  • Programmability at end-of-line
  • Ratiometric sensitivity, quiescent voltage output, and clamps for interfacing with application DAC
  • Temperature-stable quiescent voltage output and sensitivity
  • Precise recoverability after temperature cycling
  • Output voltage clamps provide short circuit diagnostic capabilities
  • Wide ambient temperature range: –40°C to 150°C
  • Immune to mechanical stress
  • Miniature package options

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check Stock
A1381ELHLT-T 3-lead SOT -40°C to 85°C Yes View Data Discontinued Contact your
local sales rep
Check
Distributor Stock
A1381EUA-T 3-lead SIP -40°C to 85°C Yes View Data Discontinued Contact your
local sales rep
Check
Distributor Stock
A1381LLHLT-T 3-lead SOT -40°C to 150°C Yes View Data Discontinued Contact your
local sales rep
Check
Distributor Stock
A1381LUA-T 3-lead SIP -40°C to 150°C Yes View Data Discontinued Contact your
local sales rep
Check
Distributor Stock
A1383ELHLT-T 3-lead SOT -40°C to 85°C Yes View Data Discontinued Contact your
local sales rep
Check
Distributor Stock
A1383EUA-T 3-lead SIP -40°C to 85°C Yes View Data Discontinued Contact your
local sales rep
Check
Distributor Stock
A1383LLHLT-T 3-lead SOT -40°C to 150°C Yes View Data Discontinued Contact your
local sales rep
Check
Distributor Stock
A1383LUA-T 3-lead SIP -40°C to 150°C Yes View Data Discontinued Contact your
local sales rep
Check
Distributor Stock
A1384ELHLT-T 3-lead SOT -40°C to 85°C Yes View Data Discontinued Contact your
local sales rep
Check
Distributor Stock
A1384EUA-T 3-lead SIP -40°C to 85°C Yes View Data Discontinued Contact your
local sales rep
Check
Distributor Stock
A1384LLHLT-T 3-lead SOT -40°C to 150°C Yes View Data Discontinued Contact your
local sales rep
Check
Distributor Stock
A1384LUA-T 3-lead SIP -40°C to 150°C Yes 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

The A138x devices are provided in a 3 pin ultramini single-in-line package (UA suffix), and a 3 pin surface mount SOT-23W package (LH suffix).

 UA/LH Combination