A1693: Vibration-Tolerant Hall-Effect Transmission Speed and Direction Sensor IC

Description

The A1693 is a magnetic sensor IC designed for measuring the speed and direction of rotating transmission systems. This IC can directly measure ring magnets or be back-biased with a magnet to measure ferrous targets.

The IC incorporates three Hall-effect elements that sense differentially, analog signal conditioning with dynamic gain and offset adjustment, analog-to-digital converters (ADCs), and a digital processor that applies intelligent algorithms to prevent the output from switching when the sensed target vibrates.

The A1693 output is an open collector that requires a pull-up resistor. Each time a new magnetic state is detected, the output goes low for a pulse-width time that communicates a forward-direction, reverse-direction, or non-direction.

The sensor IC is AEC-Q100 qualified for automotive applications, and is provided in a lead (Pb) free 4-pin single inline package (SIP) with 100% matte tin leadframe plating.

For applications that require an integrated magnet for gear tooth sensing, please see the ATS693.  For applications that require a 2-wire speed and direction transmission sensor, please see the A19520.

Top Features

  • Differential Hall-effect sensor IC measures ring magnets and ferrous targets with inherent stray field immunity
  • Vibration detection algorithms prevent false switching and provide low-signal lockout
  • Large operating air gap with independent switch points
  • Three-wire pulse-width output protocol describes speed and direction
  • Wide operating voltage and integrated protection circuits
  • AEC-Q100 Grade 0 qualified for an ambient operating temperature range of –40°C to 150°C

Part Number Specifications and Availability

Part Number Package Type Temperature RoHS
Compliant
Part Composition /
RoHS Data
Comments Samples Check Stock
A1693LKTN-RSNOBH-T 4-lead SIP -40°C to 150°C -- View Data Contact your
local sales rep
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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

A1693 4-Pin K Package