Application and optimization of a 2GHz differential amplifier/ADC driver
Cheng-Wei Pei and Adam Shou
Introduction
Modern high speed analog-to-digital converters (ADC), including those with pipeline or successive approximation register (SAR) topologies, have fast switched-capacitor sampling inputs. The highest performance parts maintain low input noise and low signal distortion (high linearity) while consuming less power with each new generation. At the same time, they are sampling at ever increasing rates, which enables wider signal bandwidths and relaxes the requirements for analog antialias filtering. The switched-capacitor inputs result in significant charge injection with every switch movement, which requires a front end that can ...
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