Automatic tuning of RC filters and fast automatic gain control for CMOS low-IF transceiver
- Resource Type
- Conference
- Authors
- Oshima, T.; Maio, K.; Hioe, W.; Shibahara, Y.; Doi, T.
- Source
- Proceedings of the IEEE 2003 Custom Integrated Circuits Conference, 2003. Custom integrated circuits Custom Integrated Circuits Conference, 2003. Proceedings of the IEEE 2003. :5-8 2003
- Subject
- Components, Circuits, Devices and Systems
Engineered Materials, Dielectrics and Plasmas
Gain control
Transceivers
Circuit optimization
Digital filters
CMOS digital integrated circuits
Prototypes
CMOS integrated circuits
Tuned circuits
Digital circuits
Timing
- Language
Automatic tuning of RC filters and fast automatic gain control (AGC) of cascaded programmable amplifiers were proposed and verified by a 0.18 /spl mu/m CMOS prototype IC. The tuning circuit includes a dummy 1st-order filter, a comparator and a simple digital circuit and tunes /spl plusmn/28 % time-constant variation of filters within /spl plusmn/4.4 % accuracy. The AGC circuit adopts a novel feedforward technique with a digital timing control, which enables one-shot gain control and thus a fast settling.