XA9220 Datasheet | X-Audio

Features z Single supply voltage 8 ~ 26V for loudspeaker driver Built-in LDO output 3.3V for others z Loudspeaker power from 24V supply BTL Mode: 20W/CH into 8Ω @0.09% THD+N PBTL Mode: 40W/CH into 4Ω @0.15% THD+N z Loudspeaker power from 13V supply BTL Mode: 10W/CH into 8Ω @10% THD+N z 87% efficient Class-D operation eliminates need for heat sink z Differential inputs z Four selectable, fixed gain settings z Internal oscillator z Short-Circuit protection with auto recovery option z Under-Voltage detection z Over-Voltage protection z Pop noise and click noise reduction z Adjustable power limit function for speaker protection z Output DC detection for speaker protection z Filter-Free operation z Over temperature protection with auto recovery z Dynamic temperature control prevents chip from over heating Applications z TV audio z Boom-Box z Powered speaker z Consumer Audio Equipment Description The XA9220 is a high efficiency stereo class-D audio 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 sink when 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 . Simplified Application Circuit 合肥市芯湃集成电路设计有限公司 1 / 20 . x-audiotech. 20W Stereo Class-D...