基于片上DC-DC的CMOS光接收机前置放大器  

A CMOS Preamplifier with On-Chip DCDC Converter for Optical Receiver

作　　者：周前能[1] 喻明艳[1] 马华[1] 赵新曙 

机构地区：[1]哈尔滨工业大学微电子中心 [2]61081部队

出　　处：《微电子学》2006年第3期300-303,共4页Microelectronics

摘　　要：利用CSMC 0.6μm CMOS工艺,设计了基于片上DC-DC转换器的光接收机前置放大器。电路采用可调跨阻放大器与片上DC-DC结构,有效地克服了单端跨阻放大器易受电源波动的干扰,并解决了高灵敏度与低失真相互矛盾的问题。模拟结果表明,输入动态范围为83 dB(峰-峰值=0.2μA^3 mA),等效输入电流噪声为1.2 pA/Hz(155 MHz),可稳定工作在155 Mb/s速率上;在5 V电源电压下,功耗为95 mW。A CMOS preamplifier with on-chip DC DC voltage-down converter for optical receiver is designed in CSMC＇s 0.6 μm CMOS technology. A controllable transimpedance amplifier （TIA） and an on-chip DC-DC converter were adopted. The interference from supply voltage noise was restrained for single-ended TIA, and the conflict between distortion of large signal and high sensitivity was suppressed for the preamplifier. Simulation results show that the circuit achieves a low equivalent input current noise of 1.2 pA√Hz （155 MHz） and a wide input dynamic range greater than 83 dB （from 0.2μA to 3 mA）, and it operates properly at a standard bit rate of 155 Mb/s. Operating at 5 V supply voltage, the circuit dissipates 95 mW of power.

关 键 词：DC—DC转换器 光接收机 跨阻放大器 前置放大器 带隙基准 

分 类 号：TN432[电子电信—微电子学与固体电子学]