Current sensing circuitry
AssigneeCirrus Logic International Semiconductor Ltd.
InventorsWei XU, Ravi KUMMARAGUNTLA, Paul WILSON, Mujo KOZAK, Christian LARSEN, John L. MELANSON, Yongjie CHENG
Life of this patent
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Abstract
A system may include a front end differential amplifier having two input terminals, two input resistors, each of the two input resistors coupled to a respective one of the two input terminals, and an input common mode biasing circuit for an output stage of the front end differential amplifier, the input common mode biasing circuit comprising two current sources configured to generate currents for biasing the output stage of the front end differential amplifier.
Claims30
A system comprising:
- a front end differential amplifier having two input terminals;
- two input resistors, each of the two input resistors coupled to a respective one of the two input terminals;
- and
- an input common mode biasing circuit for an output stage of the front end differential amplifier, the input common mode biasing circuit comprising two current sources configured to generate currents for biasing the output stage of the front end differential amplifier.
A method, in a system comprising a front end differential amplifier having two input terminals, and two input resistors, each of the two input resistors coupled to a respective one of the two input terminals, the method comprising:
- generating, with two current sources of an input common mode biasing circuit for an output stage of the front end differential amplifier, currents for biasing the output stage of the front end differential amplifier.
Dependencies are inferred from the claim text.