A Wideband Programmable Gain Amplifier with High Accuracy

XIE Yi; WEI Bao-yue; ZHANG Hai-ying

Chinese

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A Wideband Programmable Gain Amplifier with High Accuracy

更新时间：2026-09-04

- A Wideband Programmable Gain Amplifier with High Accuracy
- Vol. 30, Issue 10, Pages: 110-113(2013)
- 作者机构：
  
  中国科学院机构微电子研究所射频集成电路实验室,北京,100029
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2013
- 稿件说明：
移动端阅览
谢祎, 卫宝跃, 张海英. 一种高精度宽带可编程增益放大器设计[J]. 微电子学与计算机, 2013, 30(10): 110-113.

XIE Yi, WEI Bao-yue, ZHANG Hai-ying. A Wideband Programmable Gain Amplifier with High Accuracy[J]. 2013, 30(10): 110-113.
谢祎, 卫宝跃, 张海英. 一种高精度宽带可编程增益放大器设计[J]. 微电子学与计算机, 2013, 30(10): 110-113. DOI：

XIE Yi, WEI Bao-yue, ZHANG Hai-ying. A Wideband Programmable Gain Amplifier with High Accuracy[J]. 2013, 30(10): 110-113. DOI：

摘要

基于SMIC 180 nm混合信号CMOS工艺

1.8 V电源电压供电

设计了一种应用于射频前端芯片的高精度宽带全差分可编程增益放大器(PGA).该PGA采用四级级联结构

且带有直流失调校准电路和可驱动50Ω电阻负载的超级源随器.流片测试结果表明

该PGA性能良好

由六位数字控制字实现0~50 dB增益范围变化

1 dB步进

步长误差小于0.2 dB

1 dB带宽大于75 M Hz

3 dB带宽大于110 M Hz

放大电路部分消耗9 mA电流

输出buffer电路部分消耗8 mA电流

芯片有效面积为518μm×406μm.

Abstract

A wideband fully differential programmable gain amplifier (PGA) was designed for RF chip with high accuracy which was implemented in SMIC 180 nm 1.8 V CMOS process.The PGA was composed of four serial stages with DC offset cancellation circuit and super-source-sollower.Measurement results showed that the PGA performed properly.It was controlled by a digital signal of six bits to realize a dynamic gain of 0 to 50 dB by 1dB step with a gain error less than 0.2 dB

the 1dB bandwith up to 75 M Hz and the 3 dB bandwith up to 110 M Hz. The amplifiers consumed less than 9 mA of power and the super-source-sollower consumed less than 8mA of power

which the circuit occupied a chip area of 518 μm×406 μm.

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