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Hybrid sensor/amp eases portable device designs

Posted: 08 Dec 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Honeywell? sensor? amplifier? HMC6042? Magnetic Sensor Plus?

Honeywell has developed a new magnetic hybrid sensor/amplifier that is expected to simplify the design and improve the performance of portable devices such as compass watches, personal GPS receivers and wireless telephones.

The HMC6042 Magnetic Sensor Plus consists of magneto-resistive sensors and a precision ASIC (with three sensor amplifiers and a set/reset driver circuit). The small sensors and signal processors, designed for low-field magnetic sensing, convert magnetic field strengths into a differential output voltage and are said to offer extreme sensitivity and reliability.

Designed for 2.7-3.6V operation, the 2-axis sensor is specifically designed for the quick set/reset and fast power-on and power-off functionality requirements of small portable compassing, motion detection, pointing and detection devices. It consumes less than a milliampere of current under typical operational conditions and is also compatible with additional sensors such as the HMC1041Z for use in 3-axis, tilt-compensating systems, said the company.

Housed in a (3.6-by-5-by-1mm) Pb-free surface-mount leadless chip carrier package, the HMC6042 eliminates the requirement to assemble and integrate a variety of smaller discrete components to complete the analog portion of these types of devices, said the company. It offers a wide magnetic field range of 6 gauss and sensitivity (after reset/reset pulses) of 0.8-1.25mV/V/gauss. The operating temperature range is -40C to 125C.

Pricing for the HMC6042 is $60 each in quantities of 1-3; $25 each in quantities of 4-99; $12 each in quantities of 100-499 and $10 each in quantities of 500-999. Delivery is three to four weeks. Samples and low volume sale quantities are available. Delivery is three to four weeks.

- Gina Roos

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