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Tiny hall effect switches tout low standby current

Posted: 19 Jun 2008 ?? ?Print Version ?Bookmark and Share

Keywords:Hall Effect ICs? CMOS logic? resistors?

Rohm Electronics has introduced its complete line of hall effect ICs for portable electronics applications.

The product family is available in the industry's smallest chip-scale BGA package, measuring 1.1mm? with a package height of just 0.5mm. A slightly larger surface-mount package, measuring 1.6mm x 1.6mm x 0.6mm, is also available.

This mechanical advantage combined with a low average current of 3.5?A, fully integrated compensation and push-pull CMOS logic output circuitry make these devices an attractive alternative to mechanical switches and competitive Hall effect devices, according to Rohm.

The integrated dynamic offset cancellation yields high sensitivity to allow for less precise placement of the permanent magnet. The integrated CMOS output eliminates the need for external pull-up resistors. In addition, the devices are rated at 8kV ESD and for -40C to 85C operation.

Pricing starts at 11 cents (unipolar) to 64 cents (bipolar) in OEM quantities. Devices are available now; delivery is 10 to 12 weeks ARO.

- Ismini Scouras

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