Digital frequency and Q tuning technique for low-voltage active filters

被引：2

作者：

Huang, H ^{[1
]}

Lee, EKF ^{[1
]}

机构：

[1] Beijing Univ Posts & Telecommun, Informat Secur Ctr, Beijing 100876, Peoples R China

来源：

ELECTRONICS LETTERS | 1999年 / 35卷 / 08期

关键词：

D O I：

10.1049/el:19990441

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 digital frequency and Q tuning technique is proposed for low-voltage (1V) active RC biquad filters that uses programmable capacitor arrays (PCAs). The proposed technique does not require any peak detectors, which are difficult to implement at low voltages. Instead, it uses a small number of analogue comparators, a digital comparator and binary counters to adjust the PCAs.

引用

页码：635 / 636

页数：2

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