Patent ID: 7224213
Filing Date: 2007-05-29
Classification: H03H,H03L

Abstract:
1. A switched-capacitor ripple-smoothing filter, comprising: a positive input node (e.g., P) operable to receive an input signal; a negative input node (e.g., N) operable to receive an input signal; a first pair of capacitors (e.g., Ce and Co) at a first pair of intermediate nodes (e.g., A a second pair of capacitors (e.g., Ce and Co) at a second pair of intermediate nodes (e.g., A a positive output node (e.g., Voutp) coupled to the first pair of intermediate nodes; a negative output node (e.g., Voutn) coupled to the second pair of intermediate nodes; and an offset cancellation circuit having a first pan (e.g., capacitors