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Zetex device delivers true short circuit current monitoring

Posted: 25 Jan 2006 ?? ?Print Version ?Bookmark and Share

Keywords:ZXCT1051? current monitor? Zetex Semiconductors?

With its wide common mode sense range of 0V to within 2V of the supply voltage applied, the new ZXCT1051 current monitor from Zetex Semiconductors enables true short circuit current monitoring. Powered via a dedicated supply pin, the device can operate on both high and low sides of the load, and features a 2.7V to 20V supply range.

The current monitor translates the voltage across a low cost external sense resistor into an accurate proportional output voltage. According to Zetex, the ZXCT1051's very low offset voltage means it provides a measurement accuracy better than 3 percent at 25C, and a sense voltage of 30mV. And by offering a fixed gain of 10, the ZXCT1051 removes the need for an additional external resistor.

Drawing a quiescent current of less than 50?A, said the company, the ZXCT1051 offers a much greater power efficiency than alternatives, and with an operating temperature range of -40C to 125C, it readily supports industrial and automotive environments.

The ZXCT1051 current monitor is priced at 40 cents in 10,000-piece quantities.

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