I have seen gain boost amplifier which increases the output impedance by a factor of A of auxilliary amplifier.
i have seen all the implementations in differential output op-amp.
I am looking for the topology of single ended output gain boost folded cascode amplifier .
Can somebody suggest any document/paper.
One significant implementation could be use with a CMOS current mirror Opamp with the output stage being a regulated cascode current mirror. Gains of about 100 dB have been achieved with this configuration.