Patent Abstracts

Presents a summary of 25 patents and includes abstracts as well as diagrams, where applicable. Covers such technologies, techniques, and/or methodologies as: an amplifier with capacitor selection; a chopped charged pump; accurate voltage to current converters for rail-sensing current-feedback instrumentation amplifiers; a fully differential current-feedback CMOS/bipolar operational amplifier; accurate high-speed current sources; retiming circuits for phase-locked loops; amplifier calibration; a phase-frequency detector with programmable delay; a high-frequency switching transistor; a low-power charge pump regulator; a biasing scheme for low supply headroom applications; and a digital to analog converter and a ground offset compensation circuit.