Low gain error, linear-in-dB variable gain amplifier with programmable gain range and gain steps

被引：4

作者：

Chen, Chun-Chieh ^{[1
]}

Lu, Nan-Ku ^{[1
]}

Zeng, Yi-Zhi ^{[1
]}

机构：

[1] Chung Yuan Christian Univ, Dept Elect Engn, Chungli 32023, Tao Yuan County, Taiwan

来源：

AEU-INTERNATIONAL JOURNAL OF ELECTRONICS AND COMMUNICATIONS | 2010年 / 64卷 / 12期

关键词：

Variable gain amplifier; Automatic gain control; Pseudo-exponential;

D O I：

10.1016/j.aeue.2009.12.007

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：

This paper presents a linear-in-dB variable gain amplifier (VGA) with programmable gain range and gain step, and low gain error. A 4-bit digitally controlled look-up-table and a "pre-calibration" method yield a maximum gain range of 47 dB with 10 programmable gain step options, while most gain errors are kept below +/- 0.3 dB. The proposed VGA occupies an active area of 0.011 mm(2) in a standard 0.18 mu m CMOS process and consumes 1.42 mW from a 1.8-V supply. (C) 2010 Elsevier GmbH. All rights reserved.

引用

页码：1203 / 1206

页数：4

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