Current monitor claims to measurement accuracy

With its wide common mode sense range from 0 to within 2V of the supply voltage applied, the ZXCT1051 current monitor enables true short circuit current monitoring.

With its wide common mode sense range from 0 to within 2V of the supply voltage applied, the 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 is ideally suited to power bricks.

The current monitor translates the voltage across a low cost external sense resistor into an accurate proportional output voltage.

The ZXCT1051's very low offset voltage means it provides a measurement accuracy better than 3% at 25C and a sense voltage of 30mV.

By offering a fixed gain of 10, the ZXCT1051 removes the need for an additional external resistor, and packaged in the miniature SOT23-5 outline, it presents designers with a highly compact and cost effective current monitoring solution.

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

The monitor's wide, 2.7 to 20V supply range makes it suitable for a broad range of applications.

The ZXCT1051 current monitor is priced at US $0.40 in 10,000-piece quantities.

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