INA290-Q1

PREVIEW

This product is prototype/experimental and has not been released to the market. Testing and final processes may not be complete. This product may be subject to further changes or possible discontinuation.

AEC-Q100, 2.7 to 110V, 800kHz, ultra-precise current sense amplifier in small (sc-70) package

The INA290-Q1 is an ultra-precise current sense amplifier than can measure voltage drops across shunt resistors over a wide common-mode range from 2.7 V to 110 V. It is in a highly space-efficient SC-70 package with a PCB footprint of only 2.00 mm × 1.25 mm. The ultra-precise current measurement accuracy is achieved thanks to the combination of an ultra-low offset voltage of 25 µV (maximum), a small gain error of 0.25% (maximum), and a high DC CMRR of 160 dB (typical). The INA290-Q1 is not only designed for DC current measurement, but also for high-speed applications (like fast overcurrent protection, for example) with a high bandwidth of 800 kHz (at gain of 20 V/V) and an 85-dB AC CMRR (at 50 kHz).

The INA290-Q1 operates from a single 2.7-V to 20-V supply and draws a 350-µA supply current (typical). The INA290-Q1 is available with five gain options: 20 V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. The low offset of the zero-drift architecture enables current sensing with low ohmic shunts as specified over the extended operating temperature range (−40°C to +125°C).