Design and Test of A Low-voltage Rail-to-rail op-amp with Constant Transconductance and SR

摘要：

A low-voltage rail-to-rail op-amp with constant transconductance and slew rate is proposed. Input stage is achieved by a dummy NMOS and PMOS parallel input pairs, output stage is push-pull. The circuit obtains constant tansconductance and slew rate over the entire input common mode voltage range. The circuit design is realized in 0.18um CMOS technology and work in a 3.3V supply voltage. The circuit performance has been verified using HSPICE simulation. The simulation results show that the dc gain of the op-amp is 49dB, and the variation in transconductance is about 10％, and the variation in slew rate is changless.

关键词： rail-to-rail constant transconductance slew rate

作者: Jiang Shuang Xu jun Wen Zhiping Chen Lei Xiao Du

作者单位: Tsinghua University, BeiJing, 100084 Beijing Microelectronics Technology Institute, BeiJing, 1000 Tsinghua University, BeiJing, 100084 Beijing Microelectronics Technology Institute, BeiJing, 100076

会议类型: 国际会议

会议名称: 第八届国际测试技术研讨会(8th International Symposium on Test and Measurement)

会议地点: 重庆

会议语种:英文

页码: 263-266

在线出版日期: 2009-08-01（万方平台首次上网日期，不代表论文的发表时间）