A novel low-voltage switched-capacitor input branch

A novel switched-capacitor (SC) input branch is proposed for low-voltage applications. This circuit can be used at the very first input providing external signals. It not only eliminates the problem of a floating switch from the signal path, but also reduces circuit complexities of earlier low-voltage input branches. This is achieved by modifying the common SC branch. In the proposed configuration, there is no need for a boosted-clock voltage, a switched-opamp method, or a reset-opamp technique.