A1324, A1325, A1326: Low Noise, Linear Hall Effect Sensor ICs with Analog Output

New applications for linear output Hall-effect devices, such as displacement, angular position, and current measurement, require high accuracy in conjunction with small package size. The Allegro A1324, A1325, and A1326 linear Hall-effect sensor ICs are designed specifically to achieve both goals. This temperature-stable device is available in a miniature surface mount package (SOT23W) and an ultra-mini through-hole single in-line package.

These ratiometric Hall effect sensor ICs provide a voltage output that is proportional to the applied magnetic field. They feature a quiescent voltage output of 50% of the supply voltage. The A1324/25/26 feature factory programmed sensitivities of 5.0 mV/G, 3.125 mV/G, and 2.5 mV/G, respectively.

The features of these linear devices make them ideal for use in automotive and industrial applications requiring high accuracy, and are guaranteed through 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.

These devices are available in a 3-pin ultra-mini SIP package (UA), and a 3-pin surface mount SOT-23 style package (LH). Both are lead (Pb) free, with 100% matte tin leadframe plating.

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Allegro MicroSystems, LLC (Allegro & Sanken Semiconductors) 
Phone: 267-373-9862
Fax: 215-957-5585
Cindy Painter, Email: cpainter@allegromicro.com

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  • Features and BenefitsFeatures and Benefits
  • PackagingPackaging
  • Technical DocsTechnical Docs
  • NewsNews
  • Temperature-stable quiescent output voltage and sensitivity
  • Output voltage proportional to magnetic flux density
  • Low-noise output increases accuracy
  • Precise recoverability after temperature cycling
  • Ratiometric rail-to-rail output
  • Wide ambient temperature range: –40°C to 150°C
  • Immune to mechanical stress
  • Solid-state reliability
  • Enhanced EMC performance for stringent automotive applications

These devices are available in a 3-pin ultra-mini SIP package (UA), and a 3-pin surface mount SOT-23 style package (LH). Both are lead (Pb) free, with 100% matte tin leadframe plating.

UA/LH Combination

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Product Image Functional Block Diagram

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check
Distributor Stock
A1324LLHLX-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check stock
A1324LUA-T 3-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check stock
A1325LLHLX-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check stock
A1325LUA-T 3-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check stock
A1326LLHLX-T 3-lead SOT -40°C to 150°C Yes View Data Contact your
local sales rep
Check stock
A1326LUA-T 3-lead SIP -40°C to 150°C Yes View Data Contact your
local sales rep
Check 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.

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