Biasing circuit for transconductors
AssigneeTexas Instruments Incoporated
InventorsSrinivasan Venkatraman, Abhijit Kumar Das
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Abstract
A transconductor circuit, including a differential transconductor amplifier circuit. The transconductor circuit includes an input pair of transistors adapted to receive a differential input voltage, as well as a pair of output terminals adapted to provide a differential output current. A second pair of transistors provides current to the input pair of transistors. A floating voltage circuit is adapted to generate a floating voltage corresponding to a common-mode voltage of the differential output nodes and to control the second pair of transistors in response to the floating voltage to stabilize the common-mode voltage of the differential transconductor amplifier circuit.
Claims5
A transconductor circuit, comprising:
- a differential transconductor amplifier circuit, including an input pair of transistors adapted to receive a differential input voltage, and including a pair of output nodes adapted to provide a differential output current;
- a second pair of transistors providing current to the input pair of transistors;
- and
- a floating voltage circuit adapted to generate a floating voltage corresponding to a common-mode voltage of the differential output nodes and to control the second pair of transistors in response to the floating voltage to stabilize the common-mode voltage of the differential transconductor amplifier circuit.
Dependencies are inferred from the claim text.