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IEEE Journal of Solid-state Circuits | 1991

An adaptive biasing one-stage CMOS operational amplifier for driving high capacitive loads

Harald Parzhuber; Wolfgang Steinhagen

An adaptive biasing one-stage CMOS operational amplifier for driving high capacitive loads has been developed. The amplifier has been designed to drive liquid-crystal-displays (LCDs) in battery-supplied devices. Contradictory features like low power dissipation and high driving capability at low supply voltage are required. Complementary differential input stages provide rail-to-rail common-mode input range. With a special cross-coupled double-to-single-end conversion, a full supply output range is achieved. These improvements solve a functional problem of some existing adaptive biasing amplifiers. Simulation and measurements demonstrate good correlation and show the expected results, especially in the critical operating area. >


Archive | 1997

Full-wave rectifier and method of operation for a recognition system

Ulrich Kaiser; Harald Parzhuber


Archive | 2002

Circuit assembly for generating RF oscillation plucking pulses

Adolf Baumann; Harald Parzhuber


Archive | 2007

ALL DIGITAL PHASE LOCKED LOOP SYSTEM AND METHOD

Harald Sandner; Harald Parzhuber


Archive | 1997

Improvements in or relating to full-wave rectifiers

Ulrich Kaiser; Harald Parzhuber


Archive | 2002

Circuit assembly for generating pulses sustaining RF oscillation in a resonant circuit of a transponder

Adolf Baumann; Harald Parzhuber


Archive | 2007

Fully-digital phase locked loop system for producing analog oscillator signal, has sigma-delta-modulator whose input is connected with output of loop filter, where output of modulator modulates lowest-order bits of filter output

Harald Sandner; Harald Parzhuber


Archive | 2007

Digital phase locked loop system

Harald Sandner; Harald Parzhuber


Archive | 2002

A circuit arrangement for generating pulses for maintaining an rf oscillation in the resonant circuit of a transponder

Adolf Baumann; Harald Parzhuber


Archive | 2002

Schaltungsanordnung zur Erzeugung von Impulsen zum Aufrechterhalten einer rf Schwingung im Resonanzkreis eines Transponders A circuit arrangement for generating pulses for maintaining an RF oscillation in the resonant circuit of a transponder

Adolf Baumann; Harald Parzhuber

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