How to remove DC offset from cascading amplifiers?

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awan

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Hi;

I need to cascade amplifiers to achieve higher gain. But my signal output from first stage includes a DC offset. How can i remove the offset without using a coupling capacitor between the two amplifiers.

Please also let me know of any notes/tips on cascading amplifiers.

Thanks in advance
 

Cascading Amplifiers

Most amplifiers have cascaded stages. An opamp has many so that its DC to low frequency voltage gain is 200,000 or more.

Some opamps are made with their input offset voltage laser trimmed during manufacturing. Then it is very low.
Most single opamps have two pins for an offset adjustment pot.
 

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