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High gain and wide bandwidth switched capacitor amplifier having a dynamically loaded amplifier output
High gain and wide bandwidth switched capacitor amplifier having a dynamically loaded amplifier output
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机译:具有动态负载放大器输出的高增益和宽带开关电容放大器
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摘要
A switched capacitor amplifier provides high gain and wide bandwidth using dynamic loading. Dynamic loading is used to reduce the capacitive load during a high gain phase (e.g., during a sampling phase) and to increase the capacitive loading during a high feedback factor phase (e.g., during a holding phase). The capacitive load may be provided by an external capacitive load such as a sampling capacitor of a subsequent stage or sampling device. A low feedback factor provides a high voltage gain and the lower capacitive load. A high feedback factor increases the effective bandwidth of the amplifier by compensating for a unit gain bandwidth reduction that is due to high capacitive loading.
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