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Hello, thanks for the reply.
These were my input signals:
Vin+ = 750mVdc, 500mVac 0 phase
Vin- = 750mVdc, 500mVac 180 phase
Replacing R13-R14 for inductors in the range of THenries worked. I connected my second stage and this is what I got:
Thanks for your help!
I was not sure how to update on this thread.
I believe the original picture I had shown you did not have the first stage voltage output matching VCM. You can see now it is close to 600.9mV (VCM=600mV)
Once again please disregard the second stage.
The first picture here should show you the DC...
Sorry about the lack of details. First, thanks for the reply. I figured I should have attached the schematic from the beginning.
Some details on this circuit, C23 and C22 are the load caps. They are both 1pF. Any other cap present, has a load of 10pF. I have the feeling the feedback circuit...
Hello All,
I am wondering if you can help me with an issue I am running across with a fully differential amplifier.
I am able to set all my FETs in saturation and the common feedback circuit I am using appears to be working.
When I run the STB analysis using the cmdb probe and run a DC analysis...
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