Features

 Single supply voltage

4.5V ~ 26V for loudspeaker driver

Built-in LDO output 5V for others

 Loudspeaker power from 24V supply

BTL Mode: 20W/CH into 8 @<1% THD+N

PBTL Mode: 40W/CH into 4 @<10% THD+N

 Loudspeaker power from 12V supply

BTL Mode: 10W/CH into 8 @10% THD+N

 88% efficient Class-D operation eliminates need

for heat sink

 Differential inputs

 Four selectable, fixed gain settings

 Internal oscillator

 Short-Circuit protection with auto recovery option

 Under-Voltage detection

 Over-Voltage protection

 Pop noise and click noise reduction

 Adjustable power limit function for speaker

protection

 Output DC detection for speaker protection

 Filter-Free operation

 Over temperature protection with auto recovery

 Superior EMC performance

Applications

 TV audio

 Boom-Box

 Powered speaker

 Monitors

 Consumer Audio Equipment

Description

The AD52068 is a high efficiency stereo class-D

audio amplifier with adjustable power limit function.

The loudspeaker driver operates from 4.5V~26V

supply voltage and analog circuit operates at 5V

supply voltage. It can deliver 20W/CH output power

into 8 loudspeaker within 1% THD+N at 24V

supply voltage and without external heat sink when

playing music.

AD52068 provides parallel BTL (Mono)

application, and it can deliver 40W into 4

loudspeaker at 24V supply voltage. The adjustable

power limit function allows user to set a voltage rail

lower than half of 5V to limit the amount of current

through the speaker.

Output DC detection prevents speaker damage

from long-time current stress. AD52068 provides

superior EMC performance for filter-free application.

The output short circuit and over temperature

protection include auto-recovery feature.