BICMOS OPERATIONAL-AMPLIFIER WITH PRECISE AND STABLE DC GAIN FOR HIGH-FREQUENCY SWITCHED CAPACITOR CIRCUITS

被引：9

作者：

BASCHIROTTO, A

ALINI, R

CASTELLO, R

机构：

[1] Universitä di Pavia, Dipartimento di Elettronica, Via Abbiategrasso 298

来源：

ELECTRONICS LETTERS | 1991年 / 27卷 / 15期

关键词：

SWITCHED CAPACITOR NETWORKS; HIGH-FREQUENCY AMPLIFIERS; CIRCUIT DESIGN;

D O I：

10.1049/el:19910842

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：

A novel approach in the design of high-frequency switched capacitor (SC) circuits is presented. It is based on the use of simple and fast amplifiers with low but precisely controlled gain value. The effect of the precisely known and stable opamp gain is compensated for by changing the capacitor values during the synthesis of the SC cell. An example of an opamp with these features and the synthesis of a biquadratic filter based on this approach are given.

引用

页码：1338 / 1340

页数：3