Product category:
Sensors and Data Acquisition
News Release from: Allegro MicroSystems Europe | Subject: ATS643LSH
Edited by the Electronicstalk Editorial
Team on 21 June 2004
Gear-tooth sensor for automotive
transmissions
The ATS643LSH is a Hall-effect gear-tooth sensor module that is ideal for obtaining speed and duty-cycle information in automotive applications such as transmission speed sensing.
The ATS643LSH from Allegro MicroSystems Europe is a Hall-effect gear-tooth sensor module that is ideal for obtaining speed and duty-cycle information in automotive applications such as transmission speed sensing The new device combines a Hall-effect sensor IC and magnet in an optimised configuration to provide a user-friendly solution for true zero-speed digital gear-tooth sensing in two-wire applications
This article was originally published on Electronicstalk on 30 Aug 2000 at 8.00am (UK)
Related stories
Integrated switching regulators cut PSU cost
Allegro Sanken now offers a range of integrated high-voltage switching regulators which allow the designer to produce the lowest-cost switch-mode power supply possible
Blue light-emitting diodes available from Allegro
A range of blue light-emitting diodes developed by Sanken Electric is now available from Allegro MicroSystems Europe.
It consists of a single-shot moulded plastic package that includes a samarium cobalt magnet, a pole piece, and the Hall-effect IC optimised to the magnetic circuit.
The integrated circuit incorporates a dual-element Hall-effect sensor and signal-processing circuitry that switches in response to differential magnetic signals created by ferrous targets.
The device contains a sophisticated compensating circuit to eliminate magnet and system offsets.
Digital tracking of the analogue signal is used to achieve true zero-speed operation.
A/D and D/A convertors are used to adjust the device gain and offset at power-up, resulting in switch points which are independent of the airgap and hence greatly improved output accuracy.
The regulated current output is configured for two-wire operation, and the unit maintains a precise duty cycle over a wide temperature range.
Power-up time is less than 2ms.
Other features include internal automatic gain control and reference adjustment circuitry, a supply voltage range from 4 to 24V, and undervoltage lockout.
The small package (8mm diameter by 5.5mm long) can be easily assembled and used in conjunction with a wide variety of gear shapes and sizes, and is immune to the effects of vibration.
Operating temperature range is -40 to +150C.
• Allegro MicroSystems Europe: contact details and other news
• Email this article to a colleague
• Register for the free Electronicstalk email newsletter
• Electronicstalk Home Page
Search the Pro-Talk network of sites
