The INA240 device is a 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. All 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. INA240A1D
INA240A1DR
INA240A1PW
INA240A1PWR
INA240A2D
INA240A2DR
INA240A2PW
INA240A2PWR
INA240A3D
INA240A3DR
INA240A3PW
INA240A3PWR
INA240A4D
INA240A4DR
INA240A4PW
INA240A4PWR
资料下载
