The paper gives a novel inverting composite amplifier, establishes the mathematical model of the transform function of the kind amplifier's circuit, also analyzes the circuit error of direct current signal, the amplitude error and phase error of alternating current signal and the error produced by offset when the amplifier is at work.
The paper gives a novel no-inverting composite amplifier, using network analysis to establish the mathematical transform function of the kind of amplifier's circuit, analyze the amplitude error and phase error of alternating current signal when the circuit is used as alternating current signal amplification, and at last the stability condition of the amplifier is given based on Bode plots analyzing, amplifier's circuit has already applied in the deviseion of power measuring apparatus, overcome generals no - inverting amplifiers phase - frequency error problem.
It utilizes the composite amplifier concept to null out the offset voltage and input bias current of the amplifier while the current-feedback technique is used to improve the ac performances of the overall amplification block.
A case in point using this method with a FET preamp is the next composite amplifier.
Compensation for this composite amplifier is via the RC network, RC-CC.
This particular implementation of the PB50 will present some stability challenges since we are driving a capacitive load with a composite amplifier.
This can be most simply implemented by making U1 a composite amplifier, using a AD797 input section plus a follower-type output stage.