Duane Morris LLP
Method and apparatus for analog to digital conversion
An analog to digital converter (ADC) comprises an input node having a variable analog input voltage, first and second switched capacitor circuits, an operational amplifier, and a control circuit. The first switched capacitor circuit has first and second capacitors and is coupled to the input node, and the second switched capacitor circuit has third and fourth capacitors and is coupled to the input node. The operational amplifier is configured to be conditionally coupled to only one of the first and second switched capacitor circuits at a time and configured to conditionally provide feedback to the switched capacitor circuits via an output node. The control circuit is coupled to the first and second switched capacitor circuits for conditional coupling to the operational amplifier.
Taiwan Semiconductor Manufacturing Co., Ltd.
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additional additional inventional
Hsu-Feng Manoj M. Cheng Yen Fang-Shi Jordan Yung-Fu Chin-Hao Tao Wen
Hsueh Mhala Weng Lai Lin Chang Chung