半导体学报2012，Vol.33Issue(2)：111-116,6.DOI:10.1088/1674-4926/33/2/025009
An output amplitude configurable wideband automatic gain control with high gain step accuracy
An output amplitude configurable wideband automatic gain control with high gain step accuracy
摘要
Abstract
An output amplitude configurable wideband automatic gain control (AGC) with high gain step accuracy for the GNSS receiver is presented.The amplitude of an AGC is configurable in order to cooperate with baseband chips to achieve interference suppression and be compatible with different full range ADCs.And what's more,the gain-boosting technology is introduced and the circuit is improved to increase the step accuracy.A zero,which is composed by the source feedback resistance and the source capacity,is introduced to compensate for the pole.The AGC is fabricated in a 0.18 μm CMOS process.The AGC shows a 62 dB gain control range by 1 dB each step with a gain error of less than 0.2 dB.The AGC provides 3 dB bandwidth larger than 80 MHz and the overall power consumption is less than 1.8 mA,and the die area is 800 × 300μm2.关键词
automatic gain control/ output amplitude configurable/ high gain step accuracyKey words
automatic gain control/ output amplitude configurable/ high gain step accuracy引用本文复制引用
何晓丰,莫太山,马成炎,叶甜春..An output amplitude configurable wideband automatic gain control with high gain step accuracy[J].半导体学报,2012,33(2):111-116,6.基金项目
Project supported by the Core Electronic Devices,High-End General Chips and Basic Software Products Major Projects,China (No.2009ZX01031-002-008) and the National High Technology Research and Development Program of China (No.2009AA011601). （No.2009ZX01031-002-008）
