Abstract: An A/D converter has been described that compares the bounds of a voltage window with an analog input signal Vin. When Vin is not within the boundaries of the voltage window, the position of the voltage window is moved either upwards or downwards depending on the disposition of the analog input signal. The position of the voltage window is sequentially moved until either the analog signal Vin is within the bounds of the window or the absolute upper or lower position limits are reached.

Abstract: An amplifier circuit with improved turn-on and turn-off transient operation includes a differential amplifier and a selectively variable reference generator for controlling the amplifier output during circuit turn-on. The amplifier has differential inputs which are driven by a reference voltage from the reference generator and a single-ended input signal. During circuit turn-on, the selectively variable reference voltage, generated by charging the bypass capacitor with a constant current source, charges in a linear manner from ground potential toward its final value of, typically, half of the power supply voltage. During circuit turn-off, the bypass capacitor is discharged with a constant current source in a linear manner toward ground potential. This allows improved turn-on and turn-off transient operation to be realized, e.g.