请问大家Continuous time sigma delta adc 中非理想积分器如何

i guess the finite OTA gain and bw will introduce a gain error and an additional pole
http://ir.library.oregonstate.edu/dspace/handle/1957/4276

你说的是在simulink内建模吗?mathwork.exchange上有ota模型，可以像spice那样搭建积
分器，不过这个我没有试过。如果传统的建模方式，像SD TOOLBOX则是描述运放的闭环时
信号建立误差。
我最近想学CT sigma delta，能推荐一下书吗？

i think you can use a transfer function like 1/s for the ideal ota and a second-order one for the non-ideal OTA.
probably reading some thesis will be good. There is a book about CT:
http://books.google.com/books?id=EcG8G9j04PAC&printsec=frontcover&dq=ct+delta-sigma+candy+book