Product category:
Sensors and Data Acquisition
News Release from: Allegro MicroSystems Europe | Subject: ATS650LSH
Edited by the Electronicstalk Editorial
Team on 10 August 2004
Sensor simplifies ABS systems
The new Allegro MicroSystems ATS650LSH is a two-wire sensor module designed for wheel-speed and direction sensing in automotive ABS applications.
The new Allegro MicroSystems ATS650LSH is a two-wire sensor module designed for wheel-speed and direction sensing in automotive ABS applications The module incorporates an integrated magnet and a single-chip IC containing three highly sensitive Hall-effect sensing elements and a sophisticated digital circuit to provide accurate speed and direction information
This article was originally published on Electronicstalk on 30 Aug 2000 at 8.00am (UK)
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The regulated current output is configured for two-wire operation, and integrates the direction and diagnostic information with the speed signal using a PWM (pulsewidth modulated) protocol.
The device is optimised for a 2.5mm airgap (as used on typical ABS targets), and incorporates built-in diagnostics for both airgap and temperature.
The use of triple Hall sensors provides quick calibration within three target edges, with direction change detection on the first edge.
The ATS650LSH features true zero-speed operation, and will operate up to frequencies of more than 8kHz.
The noncontact Hall-sensing technique leads to high reliability, and the 4-lead module package offers operation over the automotive temperature range from -40 to +150C.
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