AD52651A

The AD52651A is a stereo, filter-less class-D audio amplifier with headphone driver. Operating with 5.0V loudspeaker driver supply, it can deliver 2.5W/CH output power into 4 loudspeaker within 10% THD+N and 120mW/CH output power into 16 headphone within 1% THD+N.

The AD52651A has two volume control modes by setting MODE pin. While MODE pin is set logic high, AD52651A is in DC volume control mode with 31-step volume gain from -38 dB to +20dB, adjusted by the DC voltage applied on G0 pin. Otherwise, AD52651A is the 4-step volume gain mode with +6dB, +12dB, +18dB, and +24dB gain, selected by setting G0 and G1 pins. The two volume adjustment modes are designed to fit the different volume control requirements in various applications. Beside stereo class-D amplifier, AD52651 has built-in an inverted stereo class-AB headphone driver. With the independent power-down control for left or right
channel, the AD52651 is more convenient to control the left and right channels.

The AD52651A packaged as E-TSSOP 24L is a stereo audio amplifier with high efficiency, which leads to longer battery left, less heat sink requirement, smaller board size and lower system cost, and suitable for the notebook computer, and portable multimedia devices.