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US 7,279,974 B2Granted
Fully differential large swing variable gain amplifier
AssigneeTexas Instruments Incorporated
InventorMatthew D. Rowley
Life of this patent
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Abstract
The fully differential large swing variable gain amplifier circuit includes: a first 5-transistor transconductor having a common mode node; and a second 5-transistor transconductor having a common mode node coupled to the common mode node of the first 5-transistor transconductor, wherein the second 5-transistor transconductor operates 180 degrees out of phase with the first 5-transistor transconductor.
Claims14
A circuit comprising:
- a first 5-transistor transconductor having a common mode node;
- a second 5-transistor transconductor having a common mode node coupled to the common mode node of the first 5-transistor transconductor, wherein the second 5-transistor transconductor operates 180 degrees out of phase with the first 5-transistor transconductor;
- and
- two cross-coupled loads, wherein a first of the two cross-coupled loads is coupled to the first 5-transistor transconductor and a second of the two cross-coupled loads is coupled to the second 5-transistor transconductor.
1 more element
A circuit comprising:
- a first 5-transistor transconductor having a common mode node;
- a second 5-transistor transconductor having a common mode node coupled to the common mode node of the first 5-transistor transconductor, wherein the second 5-transistor transconductor operates 180 degrees out of phase with the first 5-transistor transconductor;
- a first load coupled to the first 5-transistor transconductor and having a control node coupled to a first bias node;
- and
- a second load coupled to the second 5-transistor transconductor and having a control node coupled to a second bias node.
2 more elements
Dependencies are inferred from the claim text.