Switches, Relays & Keypads


Ultra-sensitive Hall-effect switches

8 February 2006 Switches, Relays & Keypads

The new A120x family of ultra-sensitive bipolar Hall-effect switches from Allegro MicroSystem Europe are next-generation drop-in replacements for Allegro's A313x family. The A120x family comprises continuous-time devices that feature fast power-on time and low-noise operation. These devices are programmed after packaging, at final test, providing tighter switchpoint ranges than the earlier A313x line.

To avoid sliver pulses, the A120x device has a 1,5 ms blanking pulse, yet its power-on time still passes the datasheet specification limit of 4 ms maximum. The rise and fall times are well within 2 ms.

Saturation voltage is below the 400 mV maximum specification limit at a sink current of 20 mA over the full operating temperature range.

For more information contact Simon Churches, Arrow Altech Distribution, +27 (0)11 923 9600, [email protected]



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