simplsoft
Full Member level 2
Hello
I am simulating a fully differential OTA. The setup is shown in the figure with the output wave form. I have connected the op-amp in unity gain negative feedback but the circuit is showing a gain. I have applied 200mV differential input. the output should also be 200mV but I am getting 400mV. I cant understand whats wrong with my circuit. Anyone who can help me in this?
![ckt1.jpg ckt1.jpg](https://www.edaboard.com/data/attachments/77/77162-9393cf370d56ac4e942ce390e6f631b1.jpg)
![output.jpg output.jpg](https://www.edaboard.com/data/attachments/77/77163-e6910f6b51f9c637c42cdf1c978e3e70.jpg)
In output waveform red one is the input and yellow is the output.
I am simulating a fully differential OTA. The setup is shown in the figure with the output wave form. I have connected the op-amp in unity gain negative feedback but the circuit is showing a gain. I have applied 200mV differential input. the output should also be 200mV but I am getting 400mV. I cant understand whats wrong with my circuit. Anyone who can help me in this?
![ckt1.jpg ckt1.jpg](https://www.edaboard.com/data/attachments/77/77162-9393cf370d56ac4e942ce390e6f631b1.jpg)
![output.jpg output.jpg](https://www.edaboard.com/data/attachments/77/77163-e6910f6b51f9c637c42cdf1c978e3e70.jpg)
In output waveform red one is the input and yellow is the output.
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