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VCVS implementation transistor level

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ashrafsazid

ashrafsazid

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Hi,

Can anybody help me out suggesting how I can implement the circuit shown below on transistor level? The main thing I want to know how can I implement this Voltage Controlled Voltage Source (VCVS) of gain 1 and gain 30 respectively.

cmfb.PNG
 

Create Operational Amplifier.
Then invoke resitive feedback to set gain.
 

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Doing a VCVS with transistors will require a fairly complex circuit similar to an op amp, so you might as well just use an op amp.
 

Or, better, use a circuit invented exactly for your application - one of the commonly used CMFB amplifier
 

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