Bi-CMOS工艺的高精度单向模拟开关研究  

Investigation on a High Precision Single-way Analog Switch by Bi-CMOS Process

作　　者：袁凯[1] 李志辉[1] 高松[1] 陈东石[1] 王东梅[1] 田松[1] 

机构地区：[1]东北微电子研究所,沈阳110032

出　　处：《微处理机》2002年第3期17-19.2,共3页Microprocessors

摘　　要：分析了一种以 Bi- CMOS工艺实现的高精度单向隔离模拟开关 ,这种开关用在高速A/D转换器中使电路结构大为简化。通过对开关特性的理论分析、电路模拟及工艺验证 ,证明了这种模拟开关所具有的高速可控性和传输信号的精度均优于双极工艺所实现的单向隔离模拟开关。The paper analyses a high precision single-way isolated analog switch which based on Bi-CMOS process.It simplify the circuit structure when the switch apply to high speed transformer.The theory analyses of the switch's on-off characteristic, simulation of the circuit and validate of process have been done,they all prove the good controllable character of the imitative switch and the high precision transference signal,which is better than the high precision single-way isolation imitative switch carried out by TTL process.

关 键 词：Bi-CMOS工艺 高精度单向模拟开关 A/D转换器 多元逻辑 

分 类 号：TM564[电气工程—电器] TP335.1[自动化与计算机技术—计算机系统结构]