计算机技术与发展Issue(11)：14-17,4.DOI:10.3969/j.issn.1673-629X.2013.11.004
应用于激光测距系统的高增益集成运放设计
Design of High-gain Integrated OP for Laser Rangefinder System
摘要
Abstract
Laser rangefinder system has been widely used in military,industrial,aerospace and aeronautical areas with increasing demand of surveying accuracy in recent years. Pulse ranging receiver chip is the core of whole system,of which high-gain amplifier is critical in design. An application specific integrated operational amplifier is designed for laser rangefinder system. The folded cascode followed by common source structure is adopted to get high gain,with the wide-swing bias circuit to provide the bias voltages. On the basis of con-ventional Miller compensation circuit,buffer is added to eliminate zero point and thus the phase margin is improved. Finally,small signal modeling analysis and computer simulation of the circuit are conducted. Simulation results from Cadence Spectre show that based on TSMC0. 18 μm CMOS model with the 1. 8 V power supply and 5 pF capacitor load,the circuit has a dc open-loop gain of 130. 4 dB, a unity gain bandwidth of 16. 18 MHz,a phase margin of 58. 1 and only 0. 25 mW power consumption.关键词
激光测距/集成运放/高增益/共源共栅/软件仿真Key words
laser rangefinder/integrated operational amplifier/high-gain/cascode/software simulation分类
信息技术与安全科学引用本文复制引用
任远,王竹萍,宋子奇,张珂殊..应用于激光测距系统的高增益集成运放设计[J].计算机技术与发展,2013,(11):14-17,4.基金项目
国家科技支撑计划项目(2012BAH34B01) （2012BAH34B01）
国家自然科学基金资助项目(61205161) （61205161）
