CMOS Variable-Gain Amplifier for Low-Frequency Applications

被引：0

作者：

Sovcik, Michal ^{[1
]}

Matuska, Michal ^{[1
]}

Arbet, Daniel ^{[1
]}

Stopjakova, Viera ^{[1
]}

机构：

[1] Slovak Univ Technol Bratislava, Fac Elect Engn & Informat Technol, Inst Elect & Photon, Bratislava, Slovakia

来源：

2016 IEEE 19TH INTERNATIONAL SYMPOSIUM ON DESIGN AND DIAGNOSTICS OF ELECTRONIC CIRCUITS & SYSTEMS (DDECS) | 2016年

关键词：

VGA; differential signal; CMFB;

D O I：

暂无

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：

Design of variable-gain amplifier (VGA), based on fully differential operational amplifier is presented. The proposed VGA topology was verified through simulations and analysis of main circuit parameters. The VGA is designed in 0.35 mu m CMOS technology using Cadence environment and BSIM3 family of models. Designed circuit works with the power supply of 3.3 V. The simulation results show that gain bandwidth (GBW) of about 12 MHz (for capacitive load of 1 pF) and the total harmonic distortion of less than 1% for input amplitude 100 mV were achieved. Implemented feedback circuit is stable according to phase margin of 68.15 degrees.

引用

页码：243 / 246

页数：4

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