Shady Ahmed
Member level 5
I am designing a 2 stage fully differential op-amps shown in the schematic:
![Op Amp Schematic.png Op Amp Schematic.png](https://www.edaboard.com/data/attachments/53/53744-c15ebd050c1d0eb7b6f8417bc519c956.jpg)
The resulting Bode Plots are shown here (magnitude and phase of vo_2_r - vo_2_l):
![Bodeplots.png Bodeplots.png](https://www.edaboard.com/data/attachments/53/53747-2740268601ccd0c78a591de38649479b.jpg)
My question is about the stability analysis, what should i do regarding the CMFB circuit, i heard about the iprobe component , but i am not sure how should i use it.
![Op Amp Schematic.png Op Amp Schematic.png](https://www.edaboard.com/data/attachments/53/53744-c15ebd050c1d0eb7b6f8417bc519c956.jpg)
The resulting Bode Plots are shown here (magnitude and phase of vo_2_r - vo_2_l):
![Bodeplots.png Bodeplots.png](https://www.edaboard.com/data/attachments/53/53747-2740268601ccd0c78a591de38649479b.jpg)
My question is about the stability analysis, what should i do regarding the CMFB circuit, i heard about the iprobe component , but i am not sure how should i use it.