基于衬底驱动的低压低功耗轨至轨CMOS运算放大器设计.pdf

文档介绍：河北大学
硕士学位论文
基于衬底驱动的低压低功耗轨至轨CMOS运算放大器设计
姓名:张玉波
申请学位级别:硕士
专业:微电子学与固体电子学
指导教师:郭宝增
2011-06




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Abstract
Abstract
With the development of portable electronic products and deep sub-mi cron CMOS
process technology, low-voltage and low -power analog circuit design techniques are
ing research hotspot. In the analog integrated circuit one of the typical circuits is
operational amplifier ÃTherefore the design of low-voltage and low-power operational
amplifier is very necessary Ã
The thesis has done the widespread investigation and study to the CMOS operational
amplifier based on the absorption of these technologies it designs a low voltage and low
power rail -to -rail CMOS operational amplifi er based on bulk -driven techniques.
The input stage of operational amplifier adopt the bulk -driven NMOS tube and PMOS
tube parallel supplementary differential input pair structure,which avoids the limitation of
threshold voltage efficiently. For design of ra il -to -rail stable transconductance input stage, a
variety of stable transconductance methods pared,and finally the bulk -driven
redundant differential pairs was employed. The middle stage use the bulk -driven low voltage
wide swing cascode structure which is suitable to work in low voltage. An improved
feed -forward class AB output s