Receiver gain adjustment to reducing an influence of a DC offset

摘要

The invention refers to generating a digital signal from an analog signal, wherein the analog signal is amplified according to a gain control value before being converted to a digital value by means of an analog-to-digital converter, wherein a DC offset value of the analog signal is determined, and the gain control value is generated as a function of the dynamic range of the analog-to-digital converter and the DC offset value. The invention further refers to a corresponding circuit and a computer program.

主权项

1. A method of generating a digital signal from an analog signal, wherein the analog signal is amplified according to a first gain control value and a second gain control value before being converted to a digital value by an analog-to-digital converter, the method comprising:
amplifying the analog signal according to the first gain control value; determining a DC offset value of the analog signal; generating the second gain control value as a function of a dynamic range of the analog-to-digital converter and the DC offset value, wherein the DC offset value is a function of the first gain control value; and amplifying the analog signal according to the second gain control value before being converted to the digital value by the analog-to-digital converter.