Two stage fully differential opamp with common mode feedback
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Two Stage fully differential opamp with Common Mode Feedback. Design Review 3-31-11 Yuan Ji Curtis Mayberry. Design Schematic. Bias Circuit for First Stage. Bias Circuit for First Stage(Continued). Bias Circuit for Second Stage. Push the Zero to LHP. CMFB. CMFB. First Stage.

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Two Stage fully differential opamp with Common Mode Feedback

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Two stage fully differential opamp with common mode feedback

Two Stage fully differential opamp with Common Mode Feedback

Design Review

3-31-11

Yuan Ji

Curtis Mayberry


Design schematic

Design Schematic


Bias circuit for first stage

Bias Circuit for First Stage


Bias circuit for first stage continued

Bias Circuit for First Stage(Continued)


Bias circuit for second stage

Bias Circuit for Second Stage


Push the zero to lhp

Push the Zero to LHP


Two stage fully differential opamp with common mode feedback

CMFB


Two stage fully differential opamp with common mode feedback

CMFB


First stage

First Stage


Results

Results


Performance

Performance

  • Power

  • Current

  • Performance


Gain and phase bode plots and gb product

Gain and Phase Bode Plots and GB product


Slew rate

Slew Rate +


Slew rate1

Slew Rate -


Cmrr common mode gain

CMRR-Common Mode Gain


Linear output swing range

Linear Output Swing Range


Two stage fully differential opamp with common mode feedback

ICMR


Overshoot

Overshoot


Settling time

Settling Time


Cmfb loop stability

CMFB Loop Stability


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