ESMT
Preliminary
AD8258A
Stereo/Mono Digital Audio Amplifier with Headphone Driver and
SubWoofer Line-Out
Features
16/18/20/24-bit input with I
2
S, Left-alignment
and Right-alignment data format
PSNR & DR(A-weighting)
Loudspeaker: 92dB (PSNR), 89dB (DR) @24V
Headphone: 86dB (PSNR), 86dB (DR)
Multiple sampling frequencies (Fs)
32kHz / 44.1kHz / 48kHz and
64kHz / 88.2kHz / 96kHz
128kHz/176.4kHz/192kHz
System clock = 64x, 128x, 192x, 256x, 384x,
512x, 576x, 768x, 1024x Fs
64x~1024x Fs for 32kHz / 44.1kHz / 48kHz
64x~512x Fs for 64kHz / 88.2kHz / 96kHz
64x~256x Fs for 128kHz/176.4kHz/192kHz
Supply voltage
12V~24V for loudspeaker driver
3.0~3.3V for others
Loudspeaker output power for 24V
2×28W into 8Ω@1% THD+N for stereo
2×35W into 8Ω@10% THD+N for stereo
1x55W into 4Ω@1% THD+N for mono
1x70W into 4Ω@10% THD+N for mono
Headphone power
40mW into 32Ω@1kHz and 1% THD+N
80mW into 16Ω@1kHz and 1% THD+N
Sound processing including：
Bass (+18dB~-12dB, 3dB frequency is 250Hz),
Treble (+18dB~-12dB, 3dB frequency is 7kHz),
5 bands parametric EQ,
Volume control (+24dB~-103dB, 1dB/step) and
Dynamic range control
Anti-pop design
Over-temperature protection
Under-voltage shutdown
Short-circuit protection
I
2
C control interface
Subwoofer line-out support
Applications
CD and DVD
TV audio
Car audio
Boom-box
MP3 docking systems
Portable / Handheld
Powered speaker
Wireless audio
USB speaker
Description
This is a stereo/mono fully digital audio amplifier with
output power which can drive 8Ω/4Ωload with up to
24 V voltage supply. Using I
2
C digital control interface,
AD8258A provides sound processing includes Volume,
Bass, Treble, EQ, Mixing and Dynamic Range Control
(DRC). Protection circuits are provided to protect
AD8258A damage while connection error. It is possible
to compose of 2.1 channels with two pieces of
AD8258A and 5.1 channels with four pieces.
ORDERING INFORMATION
Product Number
AD8258A
Package
10x10 64L E-LQFP
Comments
Pb-free
Elite Semiconductor Memory Technology Inc.
Publication Date: Sep. 2007
Revision: 0.1
1/37
ESMT [ ELITE SEMICONDUCTOR MEMORY TECHNOLOGY INC. ]
