Analysis
Monitor provides accurate current measurement at low cost
Zetex Semiconductors has introduced a low cost current monitor producing a current output signal with an accuracy as high as 1%. Housed in the 5-pin SOT23 package and with a wide, 2.5V to 20V, common mode voltage range, the ZXCT1020 provides a versatile current measurement solution for a wide range of applications from low voltage portables through to automotive circuitry.
ConvThe ZXCT1020’s very low on-chip offset trimming brings a significant improvement in performance for very small sense voltages at high current levels. For such conditions, accuracy is further enhanced by the device’s very low minimum operating current consumption, typically 25µA.
The current monitor’s improved temperature drift characteristics helps reduce calibration requirements by maintaining accuracy over a wide temperature range - its ambient temperature range of -40ºC to 85ºC making it suitable for the most arduous industrial operating conditions. The ZXCT1020 will also serve as a precision programmable current source in a range of applications including high linearity oscillators and F/V converters.