Patent ID: 8849230

Claim:
A semiconductor device, comprising: an input attenuator configured to receive an antenna signal and to output a first attenuated signal, the first attenuated signal corresponding to the antenna signal attenuated by a first attenuation factor, the input attenuator being further configured to receive a control signal and to select one of a plurality of predetermined attenuation factors as the first attenuation factor depending on the control signal; an analogue to digital converter configured to generate an intermediate signal by digitizing said first attenuated signal; quantizing circuitry configured to receive an automatic gain control (AGC) signal and to output a quantized AGC signal corresponding to the control signal such that a certain one of the plurality of predetermined attenuation factors corresponds to one quantization step of the quantized AGC signal; and a digital attenuator configured to receive the intermediate signal and to output a second attenuated signal, the second attenuated signal corresponding to the intermediate signal attenuated by a second attenuation factor, the second attenuation factor being set so as to compensate a gain quantization error of the control signal.