AD9256H

ESMT/EMP DIGITAL AMPLIFIER POWER STAGE Features n PVDD range from 10.8V to 16.5V n Support single-ended input audio PWM (AD) modulated signal n Support differential input audio PWM (AD & BD) modulated signal n Loudspeaker output power for stereo (BTL) - 10W x 2CH @ THD+N=0.4% into 8Ω at 15V - 8W x 2CH @ THD+N=8.4% into 8Ω at 12V n Loudspeaker output power for mono (BTL) - 20W x 1CH @ THD+N=0.45% into 8Ω at 15V n Over-temperature protection n Over-current protection n Under-voltage detection n Error report n Built-in anti-pop function n 24-pin E-TSSOP thermally-enhanced package AD9256H Applications n TV audio n DVD Receiver n Home Theaters Description The AD9256H is a high performance stereo digital amplifier power stage. It can deliver 10W x 2CH output power into 8Ω loudspeaker for stereo or 20W x 1ch output power into 4Ω loudspeaker for mono in BTL configuration within <1% THD+N at 15V supply. A patented, built-in anti-pop function can reduce the speaker’s pop noise without requiring complex anti-pop sequence in PWM input. The AD9256H’s chip is integrated with over-temperature, over-current, and under-voltage protection circuits. These additions safeguard the AD9256H against fault conditions that could damage the chip and system catastrophically. Functional Block Diagram Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc. Publication Date: Jan. 2011 Revision: 1.1 1/21 ESMT/EMP Pin Assignments AD9256H Pin Description PIN 1 2 3 4 5 6 7 8 9 10 11 12 13 14 ...