SLOS751D March 2013 – November 2018 DRV2667
In analog playback mode the signal in the IN+/IN– inputs is amplified and played through the high-voltage amplifier. When the INPUT_MUX bit is set, the DRV2667 device switches the analog inputs (IN+/IN–) to the high-voltage amplifier. While in the analog mode, the gain is still register-selectable. Also, the high-voltage amplifier enable is controlled directly through the EN_OVERRIDE bit, so the EN_OVERRIDE bit must be set for the boost and amplifier to be active.