The INA293-Q1 is a ultra-precise
current sense amplifier that can measure voltage drops across shunt resistors over a
wide common-mode range from –4 V to 110 V. The negative common-mode voltage allows the
device to operate below ground, thus accommodating precise measurement of
recirculating currents in half-bridge applications. The combination of a low offset
voltage, small gain error and high DC CMRR enables highly accurate current
measurement. The INA293-Q1 is not only designed for DC current
measurement, but also for high-speed applications (ex. Fast over-current protection)
with a high bandwidth of 1.3 MHz and an 85-dB AC CMRR (at 50 kHz).The INA293-Q1 operates from a single 2.7-V to 20-V supply, drawing 1.5 mA of
supply current. The INA293-Q1 is available with five gain options: 20
V/V, 50 V/V, 100 V/V, 200 V/V, and 500 V/V. These gain options address wide dynamic
range current-sensing applications.The INA293-Q1 is
specified over an operating temperature range of −40 °C to +125 °C and is offered in a
space-saving SOT-23 package with two pin-out variants.
