Sanyo LED-24XR113D Service Manual page 33

. Supports booting from internal SRAM, external EEPROM, and SPI flash
. 216-pin EPLQFP package
5、 AUDIO IC MAX9820
The MAX9820 Windows Vista®-compliant stereo headphone amplifier is designed for portable
Equipment where board space is at a premium. It features Maxim's DirectDrive® architecture to produce
a ground-referenced output from a single supply, eliminating the large output-coupling capacitors
required by conventional single-supply headphone amplifiers.
The MAX9820 features an undervoltage lockout that prevents over discharging of the battery
During brownout conditions, click-and-pop suppression that eliminates audible transients on startup, a
low-power shutdown mode, and thermal-overload and short-circuit protection. Additionally, the MAX9820
suppresses RF radiation received by input and supply traces acting as
antennas and prevents the amplifier from demodulating the coupled noise.