Product category:
Rotary Position, Tilt and Angular Sensors
News Release from: Allegro MicroSystems Europe | Subject: A1373 and A1374
Edited by the Engineeringtalk Editorial
Team on 21 March 2005
Hall-effect sensor ICs offer field
programmability
A new family of low-cost linear Hall-effect sensor ICs offer field programmability on the output pin.
Allegro MicroSystems Europe has introduced a new family of low-cost linear Hall-effect sensor ICs, the A1373 and A1374, which offer field programmability on the output pin The A1373/4 devices are one-time field-programmable linear Hall-effect sensors with low-noise ratiometric outputs, intended to allow the user greater flexibility from design concept to production
This article was originally published on Engineeringtalk on 19 Feb 2001 at 8.00am (UK)
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With the field-programmability feature, the user can set the gain, quiescent voltage output, and the temperature coefficient, minimising the effects of manufacturing-induced stresses and offsets.
Programming on the output pin eliminates any potential conflicts from high-voltage spikes.
A chopper stabilisation technique is used in the Hall element to provide low initial offset and minimal drift over temperature, resulting in very precise performance over a range of temperature and voltage.
The new devices are ideally suited to automotive applications involving torque or position sensing, including electronic fuel return valves, throttle position sensing, accelerator and brake pedal position sensing, seatbelt tensioners, starter/alternators, and electronic power steering.
The A1373 and A1374 are available in a four-lead single inline package developed with wider lead spacing to ease soldering to the leads.
The difference between the two devices is bandwidth: the A1374 has slighter higher bandwidth and thus slightly higher noise on the output.
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