Patent ID: 8198937

Claim:
A switched-capacitor amplifier circuit, comprising: a switched-capacitor amplifier having a first input terminal and a second input terminal for receiving an input differential voltage, a first sampling capacitor switchably coupled to the first input terminal, and a second sampling capacitor switchably coupled to the second input terminal; and an input network, coupled to the switched-capacitor amplifier, the input network including: a first switch with one terminal connected to the first input terminal and another terminal connected to a first intermediate node, a first capacitor with one end connected to the first intermediate node and another end connected to an analog ground terminal, a second switch with one terminal connected to the first intermediate node and the other terminal connected to a node, a third switch with one terminal connected to the second input terminal and the other terminal connected to a second intermediate node, a second capacitor with one end connected to the second intermediate node and another end connected to the analog ground terminal, and a fourth switch with one terminal connected to the second intermediate node and another terminal connected to the node.