Analog-to-digital converter circuit, integrated circuit, electronic device and method therefor

摘要

An automatic gain control circuit includes an input gain stage for receiving and amplifying an analog input signal; an analog-to-digital converter for receiving the amplified analog input signal and providing a digital output signal; and an overload management module. The overload management module is arranged to receive the digital output signal; determine therefrom whether the received, amplified analog input signal exceeds an operating range of the analog-to-digital converter; and provide a first control signal to the input gain stage to adjust a gain of the input gain stage in response thereto.

主权项

1. An automatic gain control circuit comprising:
an input gain stage for receiving and amplifying an analog input signal; an analog-to-digital converter for receiving the amplified analog input signal and providing a digital output signal; and an overload management module arranged to:
receive the digital output signal from the analog-to-digital converter;determine therefrom whether the received, amplified analog input signal exceeds an operating range of the analog-to-digital converter; andprovide a first control signal to the input gain stage to adjust a gain of the input gain stage in response thereto; wherein the overload management module is arranged to receive the digital output signal directly from the output of the analog-to-digital converter.