JSSC 2012第6期Other0.13μm SiGe BiCMOS

A 5-Gbs Automatic Gain Control Ampli ﬁer With Temperature Compensation Chang Liu

提出一种带温度补偿的5Gbps自动增益控制放大器，适用于高速应用。

40 dB增益, 7.5 GHz带宽, 72 mW功耗, 1.2V电源电压, 5Gb/s数据传输速率

自动增益控制温度补偿高速放大器线性dB VGA峰值检测器

▸温度补偿方案确保AGC在20°C–200°C范围内的稳定性

▸线性开环峰值检测器结合线性dB VGA

▸采用关键模块复制技术的积分器偏置电压预测

Abstract

This paper presents an automatic gain control (AGC) ampliﬁer with temperature compens ation for high-speed appli- cations. The proposed AGC consists of a folded Gilbert variable gain ampli ﬁer (VGA), a dc offset canceller, inductorless post ampliﬁers, a linear open-loop peak detector (PD), an integrator, a symmetrical exponential voltage generator, and a compensation block for temperature stability. The novel temperature com- pensation scheme ensures the AGC stability and accuracy over 20 C–200