In contrast, to a differential signal, the overall transconductance is the sum of the first transconductance (GmI) and the second transconductance (Gm2).
The second transconductance circuit is configured to couple an input of the second transconductance circuit to the first transconductance circuit in the first configuration/mode.
The second transconductance circuit is configured to isolate the input of the second transconductance circuit from the first transconductance circuit in the second configuration/mode.
The high-swing transconductance amplifier (204) includes a transconductance cell and high-swing circuitry.
The mixer circuit includes a transconductance stage (18) including a pair of transconductance transistors (44, 46).
A variable transconductance amplifier (100) including a variable attenuator stage (101A or 101B) coupled to a transconductance stage (103A or 103B).
A transconductance gain stage (44) has an input (42) connected to the output (40) of the transconductance variable gain stage (32).
A feedback resistor (46) is connected between an output (48) of the transconductance gain stage (44) and the input (42) of the transconductance gain stage (44).
A high input swing transconductance is provided in a negative feedback loop (236) of the charge pump circuit without an abrupt change in transconductance.
The present invention teaches a variety of transconductance circuits formed having two or more class AB transconductance amplifiers (1, 470, 480) coupled in parallel.
A high linearity transconductance stage is arranged with a loss cancellation method to remove the nonlinearity of a typical transconductance circuit.
The transconductance circuit takes an input voltage and generates an output current having a transconductance element and an IM3 element.
The input signal is fed forward, summed with the output of the second operational transconductance amplifier, and applied to the input of a fourth operational transconductance amplifier.
A first of the input sets exhibits a first transconductance (GmI) and a second of the input sets exhibits a second transconductance (Gm2).
Techniques are generally described herein related to filters including first operational transconductance amplifier (first OTA) and a second operational transconductance amplifier (second OTA).