Patent ID: 8030999

Claim:
An operational transconductance amplifier (OTA) that produces a pair of output signals and that receives a pair of input signals that are amplified by the OTA to produce the output signals, comprising: a pair of loads, each of which receives a respective one of the pair of output signals; a differential pair of transistors having a first transistor and a second transistor, each of the first transistor and the second transistor having a gate, having a body coupled to a respective one of the input signals, and having a drain coupled to a respective one of the pair of loads; and a level shift bias circuit that creates a common mode feedback voltage that is continuously variable in response to changes of the output signals, and that is coupled to the gate of the first transistor, the gate of the second transistor, the drain of the first transistor, and the drain of the second transistor, wherein the input signals are coupled to the bodies of the differential pair independently of the level shift bias circuit.