An automatic gain control device (110) includes a peak detector (202) configured to receive a current output of an ADC (108) and to compare it to a previous output to produce a peak value. The automatic gain control device (110) also includes an out-of-range indicator (204) configured to receive an out-of-range...http://www.google.es/patents/US7030795?utm_source=gb-gplus-sharePatente US7030795 - Digital automatic gain control method and device
