45results about How to "Gain fluctuation is small" patented technology

The application discloses a time domain residual error amplifier for a pipeline analog-to-digital converter, comprising a threshold detection circuit, a voltage amplification circuit and a phase detector; wherein the voltage amplification circuit is connected with the threshold detection circuit and the phase detector respectively; the threshold detection circuit is connected with the phase detector; the voltage amplification circuit comprises a first-stage sampling capacitor, a second-stage sampling capacitor and a constant current pull-down charge pump. The constant current pull-down charge pump discharges the first-stage sampling capacitor at a constant speed through a mirror current of a current mirror, and converts the residual error voltage reserved by the first-stage sampling capacitor into a time signal; the phase detector controls the second-stage sampling capacitor to charge and discharge according to the triggering condition of the threshold detection circuit, and converts the time signal back into a voltage signal. The time domain residual error amplifier for the pipeline analog-to-digital converter provided by the application can realize voltage gain in the form of the product of the proportion of a capacitor and the proportion of a current mirror current, and can optimize linearity and PVT robustness while retaining low power consumption characteristics.