The New Topology for the Realization of z-Domain Transfer Functions of Switched Capacitor Networks for Adaptive Filtering

Abstract

A new three phase parasitic insensitive Switched Capacitor topology is suggested for realization of arbitrary z-transfer functions. As examples, realization of a z-domain oscillatory function and a low pass filter in direct form 2 are given. The topology may be used with advantage in adaptive circuits.

Indexing terms:

• Switched capacitor network
• z-transformation
• Digital filter structure
• Analog sampled data filters