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CMOS chip provides twice the functionality in half the space

Posted: 09 Jun 2006 ?? ?Print Version ?Bookmark and Share

Keywords:ZMD31012? ZMD? ZMD31010? sensor signal conditioner? trimming component?

The new ZMD31012 device from ZMD incorporates two of the company's ZMD31010 sensor signal conditioners into one SSOP14 package to provide designers with twice the functionality in less than half the real estate. No external trimming components are required.

The CMOS chip, with two independent channels, suits applications that require redundancy, measurements of differential pressure, and flow sensors. The device accommodates separate digital compensation of sensor offset, sensitivity, temperature drift and non-linearity.

The ZMD31012 enables precise calibration of resistive bridge sensors via EEPROM. When mated to the sensor, the ZMD31012 will digitally correct offset and gain coefficients and linearity over temperature. Users can also enable a second compensation for temperature coefficients of gain, offset or bridge linearity.

The chip communicates with the host computer via the company's ZACwire serial interface and is easily mass-calibrated using a Windows environment. The ZMD31012 can provide a selectable 0 to 1V, rail-to-rail ratiometric analog output, or a digital serial output of bridge data. The fast responding (1ms) ZMD31012 provides an accuracy of 0.1 percent over -25C to 85C, and 0.25 percent over -40C to 125C.

The ZMD31012, rated for operation over -50C to 150C, is priced at $1.40 each in quantities of 50,000. A ZMD31010 development kit is also available.

- Vince Biancomano

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