Pre Amplifier Circuit Analysis

Thread Starter

baseball07

Joined Apr 24, 2007
39
Hi everybody. I have this Pre Amplifier circuit which is attached, however I cannot find anything like it in any CMOS text books. It does not seem to be of the differential type and I would like to piece it apart and analyze it. I recognize the current mirror in the top left, and the gate-drain connected MOSFET in the top right (resistor of value 1/gm). However I don't understand how the rest works. Could someone please help me understand this circut? Thanks very much.
 

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