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论文:A Micropower Chopper-Stabilized Operational
Amplifier Using a SC Notch Filter With Synchronous
Integration Inside the Continuous-Time Signal Path
Rod Burt, Senior Member, IEEE, and Joy Zhang
求问大家为什么 整体的失调电压会减小到gm2的失调电压的1/gm1 ,对应原文中III节的“The difference in
DC gains for each path results in the DC offsets and low-frequency errors of gm4 and gm2 being divided down by the DC
gain of gm1, 86 dB or a factor of 20 000. Typical offsets of
less than 20 mV are reduced to 1 uV”
求前辈指点 谢谢!
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