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Monitor gives accurate current measurements

Hauppauge, New York — Difficult environments won't prevent this monitor from providing precise DC current measurements over a wide temp range, according to Zetex Semiconductors.

With a typical temperature coefficient below 100 ppm/°C, the ZXCT1011 current monitor from Zetex Semiconductors assures accurate measurement of DC currents over the temperature range of –40°C to +125°C.

Designed to sense current on the high side, the IC avoids any disruption of the ground plane, often a cause of offset and the loss of true ground reference.

Simple to use and needing few external components, the 5-pinned ZXCT1011 measures the voltage across a low value sense resistor and converts it into a proportional output current via an external shunt resistor. The current is scaled by an output resistor to produce a 1 percent accurate ground referenced output voltage.

A maximum sense voltage of 500 mV and a bandwidth of 1.5 MHz assures that current monitor provides accurate monitoring of supply of load current in real tin, over a wide range of load currents from microamps to hundreds of amps. Coupled with its wide input voltage range of 2.5 V to 20 V and ability to withstand circuit transients, the ZXCT1011 will meet the requirements of a diverse range of demanding applications in automotive, telecom and industrial control sectors.

The ZXCT1011's miniature SOT23-5 package and typical operating current of 4μA also makes it suitable for portable operated equipment designs.

The 10,000-piece price of the ZXCT1011 is 58 cents each. Click here for the ZXCT1011 data sheet.

Zetex Semiconductors , 1-631-360-2222, www.Zetex.com.

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