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Design >> Analog Design >> Improvements in a basic opamp circuit
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Message started by Analog_Rex on Dec 13^th, 2008, 12:45am

Title: Improvements in a basic opamp circuit
Post by Analog_Rex on Dec 13^th, 2008, 12:45am

Hi...
I have a basic circuit with an opamp using a simple negative feedback configuration with two resistors. When i tested the circuit, I noticed that for a 1V input it saturates on the positive output. I would want to improve this basic opamp circuit in a way that it does not saturate even when the input is 1mV.

Can somebody help me with this?

Thank you

Rex

Title: Re: Improvements in a basic opamp circuit
Post by buddypoor on Dec 13^th, 2008, 1:40am

Analog_Rex wrote on Dec 13^th, 2008, 12:45am:

It would be very helpful if you could give us the gain of your opamp stage.

Title: Re: Improvements in a basic opamp circuit
Post by raja.cedt on Dec 13^th, 2008, 1:46am

hi,
even i want to know what is gian in closed loop as well as open loop.it will impact u r SAT level.one more thing did u bias your opamp non-inverting terminal.It would be great help if u rgive the circuit.
Thank you.