Automatic tuning of RC filters and fast automatic gain control for CMOS Low-IF transceiver

被引：9

作者：

Oshima, T ^{[1
]}

Maio, K ^{[1
]}

Hioe, W ^{[1
]}

Shibahara, Y ^{[1
]}

Doi, T ^{[1
]}

机构：

[1] Hitachi Ltd, Cent Res Lab, Kokubunji, Tokyo 1858601, Japan

来源：

PROCEEDINGS OF THE IEEE 2003 CUSTOM INTEGRATED CIRCUITS CONFERENCE | 2003年

关键词：

D O I：

10.1109/CICC.2003.1249348

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

Automatic tuning of RC filters and fast automatic gain control (AGC) of cascaded programmable amplifiers were proposed and verified by 0.18 mum CMOS prototype IC. The tuning circuit includes a dummy 1st-order filter, a comparator and a simple digital circuit and tunes +/-28% time-constant variation of filters within +/-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.

引用

页码：5 / 8

页数：4

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