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US 2017/0288622 A1Published application
Common mode gain trimming for amplifier
AssigneeTexas Instruments Incorporated
InventorsWenxiao TAN, Mayank GARG, Noble NARKU-TETTEH
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Abstract
An electrical device (e.g., an integrated circuit) includes an amplifier, a configurable common mode gain trim circuit, and a memory. The configurable common mode gain trim circuit is coupled to the amplifier. The memory is configured to include trim data that is usable during an initialization process for the electrical device to configure the impedance matching circuit.
Claims20
An electrical device, comprising:
- an amplifier;
- a configurable common mode gain trim circuit coupled to the amplifier;
- and
- memory configured to include trim data that is usable during an initialization process for the electrical device to configure the impedance matching circuit.
1 more element
An integrated circuit, comprising:
- an asymmetric amplifier comprising first and second nodes;
- a configurable common mode gain trim circuit coupled to the amplifier, wherein the configurable common mode gain trim circuit comprises a first plurality of impedance matching elements coupled between the first node and ground and a second plurality of impedance matching elements coupled between the second node and ground;
- and
- memory configured to include trim data that is usable during an initialization process for the electrical device to configure the first and second impedance matching elements.
1 more element
A method, comprising:
- determining a common mode gain of an amplifier;
- comparing the determined common mode gain to a threshold;
- changing the configuration of an common mode gain trim circuit of the amplifier until the common gain of the amplifier is below the threshold.
Dependencies are inferred from the claim text.