| 摘要 |
A semiconductor device (1), comprising: an input attenuator (10) adapted to receive an antenna signal (20) and to output a first attenuated signal (22), the first attenuated signal corresponding to the antenna signal attenuated by a first attenuation factor, the input attenuator being further adapted to receive a control signal (24) and to select one of a plurality of predetermined attenuation factors as said first attenuation factor depending on the control signal; an analogue to digital converter unit (12) adapted to generate an intermediate signal (28) by digitizing said first attenuated signal (22); and a digital attenuator (14) adapted to receive the intermediate signal (28) and to output a second attenuated signal (32), the second attenuated signal corresponding to the intermediate signal attenuated by a second attenuation factor (44), the second attenuation factor being set such as to compensate a gain quantization error of the control signal (24).
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