Switched-resistor filters - A continuous time approach to monolithic MOS filter design
Abstract
A method of designing continuous-time active RC filters which employ only capacitors and FET transistors is presented. The effective RC time constants of these filters are determined by capacitor ratios. The filters employ switched resistors. These filters can use any existing active RC or passive RC topology as the basis for the design and inherit the sensitivity properties of the circuit from which they are derived. These switched-resistor (SR) filters operate over a wide frequency range and are manufacturable in monolithic form using a basic MOS process which requires no component trimming.
- Publication:
-
IEEE Transactions on Circuits Systems
- Pub Date:
- May 1982
- Bibcode:
- 1982ITCS...29..306G
- Keywords:
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- Bandpass Filters;
- Field Effect Transistors;
- Integrated Circuits;
- Metal Oxide Semiconductors;
- Rc Circuits;
- Switching Circuits;
- Capacitors;
- Equivalent Circuits;
- Network Synthesis;
- Resistors;
- Time Constant;
- Electronics and Electrical Engineering