2.1-Channel Digital Audio Amplifier with Headphone Driver

ESMT
AD8356A
2.1-Channel Digital Audio Amplifier with Headphone Driver
Dynamic range control
z Anti-pop design
z Over-temperature protection
z Under-voltage shutdown
z Short-circuit protection
z I2C control interface
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: 93dB (PSNR), 98dB (DR)
Headphone: 87dB (PSNR), 91dB (DR)
z Multiple sampling frequencies (Fs)
32kHz / 44.1kHz / 48kHz and
64kHz / 88.2kHz / 96kHz
Applications
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
z Supply voltage
3.0~12V for loudspeaker driver
3.0~3.3V for others
z Loudspeaker output power ( @10% THD+N)
2×8.7W(Full,8Ω)+16.7W(Full, 4Ω) for 2.1-channel
2×4.3W(Half,4Ω)+16.7W(Full, 4Ω) for 2.1-channel
2×8.7W(Full,8Ω) for stereo
2×4.3W(Half,4Ω) for stereo
2×16.7W(Full, 4Ω) for stereo
z Headphone power
34mW into [email protected] and 1% THD+N
65mW into [email protected] and 1% THD+N
110mW into [email protected] and 1% THD+N
200mW 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
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 2.1-channel fully digital audio amplifier with
output power which can deliver up to 2×8.7W to 8Ω
load for L,R channel and 16.7W to 4Ω load for
sub-woofer channel simultaneously with 12V supply
voltage. Using I2C digital control interface, AD8356A
provides sound processing includes Volume, Bass,
Treble, EQ, Mixing and Dynamic Range Control (DRC).
Users can use one AD8356A for stereo or 2.1-channel,
two for 5.1-channel and three for 7.1-channel,
respectively.
ORDERING INFORMATION
Product Number
Package
Comments
AD8356A-KG
7x7 48L QFN
Pb-free
AD8356A-LEG
7x7 48L E-LQFP
Pb-free
Elite Semiconductor Memory Technology Inc.
Publication Date: Jul. 2008
Revision: 1.4
1/33
ESMT
AD8356A
Pin Assignment
MCLK
PLLGND
PLLVDD
CLK_OUT
DVDD
MO
DGND
M1
SDATA0
SDATA1
SDATA2
LRCIN
1
36
2
35
3
34
4
33
5
6
32
31
7
30
8
29
9
28
10
27
11
26
12
25
HPL
HPR
AGND
AVDD
PWMSA
DEF
SDA
SCL
SA1
SA0
ERROR
PD
Pin Description
PIN
NAME
TYPE
DESCRIPTION
CHARACTERISTICS
1
MCLK
I
Master clock input
Schmitt trigger TTL input buffer
2
PLLGND
P
Ground for PLL
3
PLLVDD
P
Supply for PLL
(Note1)
4
CLK_OUT
O
PLL output
TTL output buffer
5
DVDD
P
Digital Power
(Note1)
6
M0
I
Mode selection 0
Schmitt trigger TTL input buffer
7
DGND
P
Digital Ground
8
M1
I
Mode selection 1
Schmitt trigger TTL input buffer
9
SDATA0
I
Serial audio data input 0
Schmitt trigger TTL input buffer
10
SDATA1
I
Serial audio data input 1
Schmitt trigger TTL input buffer
11
SDATA2
I
Serial audio data input 2
Schmitt trigger TTL input buffer
12
LRCIN
I
Left/Right clock input (Fs)
Schmitt trigger TTL input buffer
13
BCLK
I
Bit clock input (64Fs)
Schmitt trigger TTL input buffer
14
VDDSLB
P
Supply for subwoofer-left channel B
(Note2)
15
SLB
O
Subwoofer-left channel output (-)
16
GNDSL
P
Ground for subwoofer-left channel
17
SLA
O
Subwoofer-left channel output (+)
18
VDDSLA
P
Supply for subwoofer-left channel A
(Note2)
19
VDDSRA
P
Supply for subwoofer-right channel A
(Note2)
Elite Semiconductor Memory Technology Inc.
Publication Date: Jul. 2008
Revision: 1.4
2/33
ESMT
AD8356A
20
SRA
O
Subwoofer-right channel output (+)
21
GNDSR
P
Ground for subwoofer-right channel
22
SRB
O
Subwoofer-right channel output (-)
23
VDDSRB
P
Supply for subwoofer-right channel B
(Note2)
24
Re set
I
Reset, low active
Schmitt trigger TTL input buffer
25
PD
I
Power down, low active
Schmitt trigger TTL input buffer
26
ERROR
O
ERROR output
Open-drain output
2
27
SA0
I
I C select address 0
Schmitt trigger TTL input buffer
28
SA1
I
I2C select address 1
Schmitt trigger TTL input buffer
2
29
SCL
I
I C serial clock input
Schmitt trigger TTL input buffer
30
SDA
I
I2C serial data input
31
DEF
I
Default volume, 0=Mute, 1=Un-Mute
Schmitt trigger TTL input buffer
32
PWMSA
O
Half-bridge, sub-woofer channel output
TTL output buffer
33
AVDD
P
Analog supply
(Note1)
34
AGND
P
Analog ground
35
HPR
O
Headphone right channel output
36
HPL
O
Headphone left channel output
37
HP-SPK
I
Headphone detection
38
VDDRB
P
Supply for right channel B
39
RB
O
Right channel output (-)
40
GNDR
P
Ground for Right channel
41
RA
O
Right channel output (+)
42
VDDRA
P
Supply for right channel A
(Note2)
43
VDDLA
P
Supply for left channel A
(Note2)
44
LA
O
Left channel output (+)
45
GNDL
P
Ground for left channel
46
LB
O
Left channel output (-)
47
VDDLB
P
Supply for left channel B
(Note2)
48
PLL_Byp
I
PLL Bypass
Schmitt trigger TTL input buffer
Schmitt trigger TTL input buffer with
open-drain output
(Note2)
Note1:These pins provide the supply for digital PWM controller, headphone drivers, built-in PLL and
protection circuits except for loudspeaker short-circuit protection circuits.
Note2:These pins provide the supply for loudspeaker driver stages, which are known as “PVDD”.
Elite Semiconductor Memory Technology Inc.
Publication Date: Jul. 2008
Revision: 1.4
3/33