Patent ID: 7359690

Claim:
A method of automatically controlling an amplifier gain, said method comprising the steps of: providing an analogue amplifier having said amplifier gain and an output connected to a first and a second digital back-end via an analogue-to-digital converter, said first and second digital back-ends each including an automatic-gain-control circuit; determining a first automatic-gain-control signal, using said automatic-gain-control circuit of said first digital back-end, said first automatic-gain-control signal intended for a first dynamic range of said amplifier gain adapted to work with said first digital back-end; determining a second automatic-gain-control signal, using said automatic-gain-control circuit of second digital back-end, said second automatic-gain-control signal intended for a second dynamic range of said amplifier gain adapted to work with said second digital back-end; selecting said first automatic-gain-control signal to set said amplifier gain to a first amplifier gain value within said first dynamic range; and adjusting said second back-end to operate as if said amplifier gain was set within said second dynamic range.