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產(chǎn)品描述

The XA9220 is a high efficiency stereo class-Daudio amplifier with adjustable power limit function and dynamic temperature control. The loudspeaker driver operates from 8~26V supply voltage and analog circuit operates at 3.3V supply voltage. It can deliver 20W/CH output power into 8Ω loudspeaker within 0.09% THD+N and without external heat sinkwhen playing music.

XA9220 provides parallel BTL (Mono) application, and it can deliver 40W into 4Ω loudspeaker within 0.15% THD+N. The adjustable power limit function allows user to set a voltage rail lower than half of 3.3V to limit the amount of current through the speaker.

Output DC detection prevents speaker damage from long-time current stress. The dynamic temperature control is a gain control system.As chip

junction temperature higher than a warning level, the gain level will decrease until junction temperature lower than the warning level.

The output short circuit and over temperature protection include auto-recovery feature.