Abstract: A digital-to-analog convertor, and a methods of digital-to-analog conversion employ first and second PWM generators providing first and second PWM signals, said first PWM generator being controlled by a most significant word of the digital signal, and said second PWM generator being controlled by a least significant word of the digital signal. First and second switches are controlled by the first and the second PWM signals and first and second current sources have first and second currents, switched by the first and the second switches, thereby providing first and second switched currents, whereby an analog signal is obtained by the combination of the first and second switched currents.

Abstract: A force-balance accelerometer having a pick-off coil responsive to displacement of a seismic mass from a balance position for providing an output corresponding to the displacement, includes a digital signal processor including tow pulse width modulation generators for converting the output of the pick-up coil to a digital signal, and a torque coil responsive to the digital signal for rebalancing the seismic mass by restoring the mass to the balance position. The processor outputs the digital signal as first and second PWM signals, which control the digital signal.

Abstract: A force-balance accelerometer having a pick-off coil responsive to displacement of a seismic mass from a balance position for providing an output corresponding to the displacement, includes a digital signal processor including tow pulse width modulation generators for converting the output of the pick-up coil to a digital signal, and a torque coil responsive to the digital signal for rebalancing the seismic mass by restoring the mass to the balance position. The processor outputs the digital signal as first and second PWM signals, which control the digital signal.