Space-enhanced-product, -4V to 80V, 1.3MHz current-sense amplifier

The INA951-SEP is a current sense

amplifier that can measure voltage drops across shunt resistors over a wide

common-mode range from –4V to 80V. 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 INA951-SEP is not only designed for DC current measurement, but also

for high-speed applications (ex. Fast over-current protection) with a high bandwidth

of 1.3MHz and an 85dB AC CMRR (at 50kHz).

The INA951-SEP operates from a

single 2.7V to 10V supply, drawing 1.5mA of supply current. The INA951-SEP is available with a gain option of 20V/V.

The INA951-SEP is specified over an

operating temperature range of −55°C to +125°C and is offered in a space-saving

SOT-23 package.