APPARATUS AND METHOD FOR IMPLEMENTING A CONSTANT TRANSCONDUCTANCE CIRCUIT

摘要

A circuit for generating constant transconductance using an on-chip resistance equivalent circuit in place of an off-chip resistor. The on-chip resistance equivalent circuit includes first and second MOSFETs. The first MOSFET is configured to operate in a triode region for generating a first resistance. The second MOSFET is configured to operate in a triode region and to mirror the first resistance of the first MOSFET, thereby generating a second resistance. The second resistance generated by the second MOSFET is then used for biasing a transconductance generating circuit to provide a biasing voltage with constant transconductance.