The INA281-Q1 is a high-precision 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 INA281-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 1.3 MHz and an 65-dB AC CMRR
(at 50 kHz).
The INA281-Q1 operates from a single 2.7-V to 20-V
supply, drawing 1.5 mA of supply current. The
INA281-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 for currentsensing
applications.INA281A1QDBVRQ1
INA281A2QDBVRQ1
INA281A3QDBVRQ1
INA281A4QDBVRQ1
INA281A5QDBVRQ1
INA281B1QDBVRQ1
INA281B2QDBVRQ1
INA281B3QDBVRQ1
INA281B4QDBVRQ1
INA281B5QDBVRQ1
资料下载
