高性能电荷泵电路设计  

Design of a High Performance Charge Pump Circuit

作　　者：刘臻[1] 

机构地区：[1]浙江万里学院计算机与信息学院,宁波315101

出　　处：《微计算机信息》2007年第03Z期302-303,261,共3页Control & Automation

基　　金：浙江省教育厅科研项目(20061909)

摘　　要：本文针对传统电荷泵电路中的电荷注入、时钟馈通、电荷共享和充放电失配等非理想因素,设计了一种高精度电荷泵,降低了锁相环(PLL)的相位噪声。基于CHARTERED 0.25um CMOS的Bsim3模型,采用Cadence的Spectre仿真器对该电路进行了模拟仿真,结果表明该电路与传统的电荷泵相比具有更高的精度。并解决了传统电荷泵中的电荷注入、时钟馈通、电荷共享和充放电失配等问题,显著提高了电荷泵精度。A high performance CMOS charge pump is designed to overcome the disadvantage in the traditional charge pump circuit, including charge injection, clock feedthrough, charge sharing and charge/discharge mismatches. This circuit has the advantages of high-accuracy over the traditional ones. Simulations and verifications are operated by using Spectre tools, and solves some problems on traditional charge pump circuit.

关 键 词：锁相环 电荷泵 失配 

分 类 号：TN402[电子电信—微电子学与固体电子学]