INA240A1PW Description

INA240A1PWR is a high and low side, bidirectional, zero-drift current sensing amplifier with increased PWM rejection in an 8-pin TSSOP package. Drops across shunt resistors can be sensed over a wide common mode voltage range of -4V to 80V, regardless of supply voltage. The negative common mode voltage allows the device to operate below ground, accommodating the typical solenoid flyback duration. In systems that utilise pulse width modulation (PWM) signals, enhanced PWM rejection delivers significant levels of suppression for large common mode transients (V/t) (such as motor drives and solenoid control systems). This feature enables accurate current measurements without big transients and related output voltage recovery ripple.

INA240A1PW Features

Quiescent current of 2.4mA (max)
Operating temperature range from -40°C to 125°C
Operates from a single 2.7V to 5.5V
Enhanced PWM rejection
Offset voltage of ±25μV (max), offset drift of 250nV/°C (max)
Excellent CMRR, -132dB DC CMRR, -93dB AC CMRR at 50KHz
Accuracy of 0.20% (max) gain error, 2.5ppm/°C (max) gain drift
20V/V gains

INA240A1PW Applications

Motor Controls
Solenoidand Valve Controls
Power Management
Actuator Controls
Pressure Regulators
TelecomEquipment