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Improvements in a basic opamp circuit
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

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buddypoor

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Bremen, Germany

Re: Improvements in a basic opamp circuit
Reply #1 - Dec 13^th, 2008, 1:40am

Analog_Rex wrote 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

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

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LvW (buddypoor: In memory of the great late Buddy Rich)

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raja.cedt Senior Fellow Offline Posts: 1516 Germany	Re: Improvements in a basic opamp circuit Reply #2 - 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.
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