Analogue, Mixed Signal, LSI


Current-sense amp integrating shunt resistor

14 October 2015 Analogue, Mixed Signal, LSI

Texas Instruments recently introduced a current-sense amplifier that integrates a high-precision, low-drift shunt resistor, which can deliver highly accurate measurements over a wide temperature range.

The INA250 integrates the shunt resistor with a bidirectional, zero-drift current-sense amplifier to support both low-side and high-side implementations. Its accuracy and low drift reduce or may eliminate designers’ calibration effort for many systems. It is targeted primarily at applications such as test and measurement, communications load monitoring and power supplies.

The integrated 2 m shunt resistor offers 0,1% tolerance as well as low drift of 15 pmm/°C from -40°C to 125°C, while the amplifier has offset current of 12,5 mA with temperature drift of 250 μA/°C and gain drift of 30 ppm/°C. This adds up to a maximum error of 0,75% across the temperature range.

For more information contact EBV Electrolink, +27 (0)21 402 1940, [email protected], www.ebv.com



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