Allegro MicroSystems, LLC Adds Two New Devices To Their Existing Linear Hall IC Portfolio

ICs Provide Low Noise, Temperature Stable Analog Outputs for High Bandwidth Automotive Applications, Including a 9 mV/G Sensitivity Device

June 18, 2013

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Worcester, MA – Allegro MicroSystems, LLC adds two new factory one-time programmable (OTP-ROM) linear ICs to their existing portfolio. These devices eliminate the need for customers to optimize/program the devices for their finished sensor assemblies. Allegro’s A1388 and A1389 architecturally have the ability to support a magnetic input sensitivity range of 2.0 to 4.0 mV/G, and 4.0 to 9.0 mV/G, respectively. However, the A1388 and A1389 devices initially being released to market are factory programmed to specific magnetic input sensitivity levels. Initially released device types include:

  • A1388LLHLX-2-T with 2.5 mV/G sensitivity
  • A1389LLHLX-9-T with 9 mV/G sensitivity
  • A1389LLHLX-RP9-T with -9 mV/G sensitivity

The temperature coefficients for both sensitivity and the quiescent voltage output (QVO) are programmed over temperature at Allegro to maximize accuracy and minimize distribution tolerances. The A1388 and A1389 provide low output noise (15 mV (p-p) @ 9.0 mV/G sensitivity for the A1389) and improved EMI susceptibility at various frequencies. They also support a fast refresh rate of 20 KHz for high bandwidth applications.

The A1388 and A1389 are targeted at the automotive, industrial and consumer markets and are currently being offered in a small LH (SOT-23W) surface mount package.

Allegro MicroSystems is redefining the future of power and sensing technologies. From green energy to advanced mobility and motion control systems, our team is passionate about developing intelligent solutions that move the world forward and give our customers a competitive edge. With global engineering, manufacturing and support, Allegro is a trusted partner to both large enterprises and regional market leaders worldwide. Visit

Editorial Contact:

Nicole Bump
Senior Manager, Marketing Communication
Tel: (603) 314-1586
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