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what is the topology?

tommydidi

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topology.jpg


It will be greatly appreciated if some one can point me to the reference material.


Thanks,
Jim
 

frankrose

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This is a source degenerated differential pair. The degeneration resistor value depends on the Rds.on of the FETs. Basically used to decrease gain and increase linearity of the diff.pair.
For source degeneration a good manual: Behzad Razavi - Design of analog CMOS integrated circuits, see single ended amplifiers
 

sutapanaki

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This is a source degenerated pair used in the 1990s to build transconductances for Gm-C filters. You can find it in papers from that time.
 

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