The CS3750 is a dual H-bridge four quadrant air-core gauge driver. The IC provides all the functions necessary to drive a tachometer or speedometer as part of a microprocessor based multiplexed system. Digital input control eliminates the need for any analog calibration of the gauge. The controlling microprocessor sends out a PWM signal to each H bridge driver input (IN1, IN2). The PWM signal duty cycle is proportional to the Hbridge output. Output current