ESMT AD8258A

ESMT
AD8258A
Preliminary
Stereo/Mono Digital Audio Amplifier with Headphone Driver and
SubWoofer Line-Out
Features
2
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)
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 [email protected]% THD+N for stereo
2×35W into [email protected]% THD+N for stereo
1x55W into [email protected]% THD+N for mono
1x70W into [email protected]% THD+N for mono
z Headphone power
40mW into [email protected] and 1% THD+N
80mW into [email protected] 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,
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
Package
Comments
AD8258A
10x10 64L E-LQFP
Pb-free
Elite Semiconductor Memory Technology Inc.
Publication Date: Sep. 2007
Revision: 0.1
1/37
ESMT
Preliminary
AD8258A
Pin Assignment
Pin Description
PIN
NAME
1
N.C.
2
N.C.
3
N.C.
4
N.C.
5
PLL_Byp
I
6
MCLK
I
Master clock input
Schmitt trigger TTL input buffer
7
CLK_OUT
O
Clock output from PLL
TTL output buffer
8
DGND
P
Digital Ground
9
TV
I
1: hardware control, 0:I2C control
10
DVDD
P
Digital Power
11
DEF
I
Default volume setting
Schmitt trigger TTL input buffer
12
FSEL
I
0: 48kHz, 1:96kHz
Schmitt trigger TTL input buffer
TYPE
DESCRIPTION
CHARACTERISTICS
Schmitt trigger TTL input buffer
Elite Semiconductor Memory Technology Inc.
Schmitt trigger TTL input buffer
Publication Date: Sep. 2007
Revision: 0.1
2/37
ESMT
13
FS192
14
N.C.
15
N.C.
16
N.C.
17
N.C.
18
N.C.
19
Preliminary
AD8258A
I
192k sampling rate selection
Schmitt trigger TTL input buffer
SDATA0
I
Serial audio data input 0
Schmitt trigger TTL input buffer
20
SDATA1
I
Serial audio data input 1
Schmitt trigger TTL input buffer
21
MONO
I
MONO mode enable: high active
Schmitt trigger TTL input buffer
22
LRCIN
I
Left/Right clock input (Fs)
Schmitt trigger TTL input buffer
23
BCLK
I
Bit clock input (64Fs)
Schmitt trigger TTL input buffer
24
PD
I
Power down, low active
Schmitt trigger TTL input buffer
25
ERROR
O
Error status
Open-drain output
26
RESET
I
Reset, low active
Schmitt trigger TTL input buffer
27
SA0
I
I2C select address 0
Schmitt trigger TTL input buffer
28
SA1
I
I2C select address 1
Schmitt trigger TTL input buffer
29
SUBA
O
Subwoofer output + / half-bridge output
TTL output buffer
30
SUBB
O
Subwoofer output -
TTL output buffer
31
N.C.
32
N.C.
33
N.C.
34
N.C.
35
SCL
I
I2C serial clock input
Schmitt trigger TTL input buffer
36
SDA
I/O
I2C bi-directional serial data
Schmitt trigger TTL input buffer
37
DGND
P
Digital Ground
38
DVDD
P
Digital Power
39
PVDDR
P
Headphone Right channel supply
40
HPR
O
Headphone R channel output
41
VCM
O
Headphone Common-Mode voltage
42
AGND
P
Analog ground
43
AVDD
P
Analog supply
44
HP_SPK
I
45
HPL
O
Headphone L channel output
46
PVDDL
P
Headphone Left channel supply
47
N.C.
48
N.C.
Selection between Headphone and Speaker
1: Headphone 0:Speaker
Elite Semiconductor Memory Technology Inc.
Publication Date: Sep. 2007
Revision: 0.1
3/37