AD52068B-2x20W Stereo Class-D Audio Amplifier with Power Limit  DataSheet
Description
The AD52068B 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 8W loudspeaker within 1% THD+N at 24V supply
voltage and without external heat sink when playing
music.
AD52068B provides parallel BTL (Mono)
application, and it can deliver 40W into 4W
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. The output short circuit
and over temperature protection include autorecovery
feature.
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 8W @<1% THD+N
PBTL Mode: 40W/CH into 4W @<10% THD+N
_ Loudspeaker power from 12V supply
BTL Mode: 10W/CH into 8W @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
Applications
_ TV audio
_ Boom-Box
_ Powered speaker
_ Monitors
_ Consumer Audio Equipment
|
