INA240A1QPWRQ1

The INA240-Q1 device is an automotive-qualified,
voltage-output, current-sense amplifier with enhanced
PWM rejection that can sense drops across shunt
resistors over a wide common-mode voltage range
from –4 V to 80 V, independent of the supply
voltage. The negative common-mode voltage allows
the device to operate below ground, accommodating
the flyback period of typical solenoid applications.
Enhanced PWM rejection provides high levels
of suppression for large common-mode transients
(ΔV/Δt) in systems that use pulse width modulation
(PWM) signals (such as motor drives and solenoid
control systems). This feature allows for accurate
current measurements without large transients and
associated recovery ripple on the output voltage.
This device operates from a single 2.7-V to 5.5-V
power supply, drawing a maximum of 2.4 mA of
supply current. Four fixed gains are available: 20
V/V, 50 V/V, 100 V/V, and 200 V/V. The low offset
of the zero-drift architecture enables current sensing
with maximum drops across the shunt as low as 10-
mV full-scale. Grade 1 versions are specified over
the extended operating temperature range (–40°C to
+125°C) and are offered in an 8-pin TSSOP and 8-pin
SOIC packages. Grade 0 versions are specified over
the extended operating temperature range (–40°C to
+150°C) and are offered in an 8-pin SOIC package.