Document
ESMT
Preliminary
AD8258A
Stereo/Mono Digital Audio Amplifier with Headphone Driver and SubWoofer Line-Out
Features
z 16/18/20/24-bit input with I S, Left-alignment and Right-alignment data format z PSNR & DR(A-weighting) Loudspeaker: 92dB (PSNR), 89dB (DR) @24V Headphone: 86dB (PSNR), 86dB (DR) www.DataSheet4U.com z Multiple sampling frequencies (Fs) 32kHz / 44.1kHz / 48kHz and 64kHz / 88.2kHz / 96kHz 128kHz/176.4kHz/192kHz z 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 z Supply voltage 12V~24V for loudspeaker driver 3.0~3.3V for others z 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 z Headphone power 40mW into 32Ω@1kHz and 1% THD+N 80mW into 16Ω@1kHz and 1% THD+N z Sound processing including: Bass (+18dB~-12dB, 3dB frequency is 250Hz), Treble (+18dB~-12dB, 3dB frequency is 7kHz), 5 bands parametric EQ,
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Volume control (+24dB~-103dB, 1dB/step) and Dynamic range control z Anti-pop design z Over-temperature protection z Under-voltage shutdown z Short-circuit protection z I2C control interface z Subwoofer line-out support
Applications
z CD and DVD z TV audio z Car audio z Boom-box z MP3 docking systems z Portable / Handheld z Powered speaker z Wireless audio z 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 I2C 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
Pin Assignment
Preliminary
AD8258A
www.DataSheet4U.com
Pin Description
PIN 1 2 3 4 5 6 7 8 9 10 11 12 NAME N.C. N.C. N.C. N.C. PLL_Byp MCLK CLK_OUT DGND TV DVDD DEF FSEL I I O P I P I I Master clock input Clock output from PLL Digital Ground 1: hardware control, 0:I2C control Digital Power Default volume setting 0: 48kHz, 1:96kHz Schmitt trigger TTL input buffer Schmitt trigger TTL input buffer Schmitt trigger TTL input buffer Schmitt trigger TTL input buffer Schmitt trigger TTL input buffer TTL output buffer
TYPE
DESCRIPTION
CHARACTERISTICS
Elite Semiconductor Memory Technology Inc.
Publication Date: Sep. 2007 Revision: 0.1 2/37
ESMT
13 14 15 16 17 18 19 20
www.DataSheet4U.com
Preliminary
I 192k sampling rate selection
AD8258A
Schmitt trigger TTL input buffer
FS192 N.C. N.C. N.C. N.C. N.C. SDATA0 SDATA1 MONO LRCIN BCLK
PD
I I I I I I O I I I O O
Serial audio data input 0 Serial audio data input 1 MONO mode enable: high active Left/Right clock input (Fs) Bit clock input (64Fs) Power down, low active Error status Reset, low active I2C select address 0 I2C select address 1 Subwoofer output + / half-bridge output Subwoofer output -
Schmitt trigger TTL input buffer Schmitt trigger TTL input buffer Schmitt trigger TTL input buffer Schmitt trigger TTL input buffer Schmitt trigger TTL input buffer Schmitt trigger TTL input buffer Open-drain output Schmitt trigger TTL input buffer Schmitt trigger TTL input buffer Schmitt trigger TTL input buffer TTL output buffer TTL output buffer
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22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
ERROR RESET
SA0 SA1 SUBA SUBB N.C. N.C. N.C. N.C. SCL SDA DGND DVDD PVDDR HPR VCM AGND AVDD HP_SPK HPL PVDDL N.C. N.C.
I I/O P P P O O P P I O P
I2C serial clock input I2C bi-directional serial data Digital Ground Digital Power Headphone Right channel supply Headphone R channel output Headphone Common-Mode voltage Analog ground Analog supply Selection between Headphone and Speaker 1: Headphone 0:Speaker Headphone L channel output Headphone Left channel supply
Schmitt trigger TTL input buffer Schmitt trigger TTL input buffer
Elite Semiconductor Memory Technology Inc.
Publication Date: Sep. 2007 Revision: 0.1 3/37
.