Si2704/05/06/07-A10
EMI M
ITIGATING
2.1
X
5 W C
LAS S
D A
UDIO
A
M P L I F I E R
Features
Digital input Delta-Sigma PWM
Patent-pending EMI mitigation
AM radio band noise-free notch
GSM/iPhone friendly
Wideband PWM carrier spreading
Power stage slew rate control
Power stage feedback for PSR/THD
2x 5 W @ 3
BTL; 2x 3 W @ 8
BTL
88% efficiency with >50 dB PSRR
95 dB dynamic range and <0.1% THD
Stereo PWM DAC line analog outputs
Master/slave I
2
S w/ 3 inputs & 1 output
Automatic digital audio rate detection
Standard audio rates from 32–192 kHz
Audio activity detector w/ auto-standby
Operates from external XTAL or clock
Buffered master/regulator clock output
Programmable 7 band parametric EQ,
dynamic range compressor, tone control
Crossbar input mixer with scaling
Digital tone and alert generation
128 dB volume control in 0.5 dB steps
Multiple low power operating modes
Over-current and over-temperature
detection w/ auto recovery
Pop and click free operation
Standard 2-wire control w/ 2 addresses
System flexibility w/ 3 multi-function pins
Dual supply voltage: 2.7–3.6 V main
and 4.0–6.6 V power stage
Available in 4x4 24-pin Power QFN and
7x7 48-pin Power eTQFP package
Both Pb-free/RoHS compliant
Ordering Information:
See page 37.
Pin Assignments
Applications
Si2704/05/06/07
XTLO
PMP/MP3 docking stations
Portable consumer audio electronics
Table top and portable radios
Active/wireless speakers
TVs and monitors
TV sound bars
24
DCLK
DIN
VIO
SCLK
SDIO
CLKO
1
2
3
4
5
6
7
MFP3
23
22
21
20
19
18
17
OUTPL
OUTNL
GNDL
GNDR
OUTNR
OUTPR
Description
The Si2704/05/06/07 EMI mitigating 2.1 digital audio processing Class D
amplifier integrates a power stage, PWM DAC, and digital audio processing
(DAP) for simplified, low cost, power efficient system designs in consumer
audio electronics. The digital input amplifier features delta-sigma PWM and
innovative EMI mitigation technology for producing high-quality audio while
effectively managing PWM switching noise for enhanced EMI compliance and
AM/FM radio co-existence, while also being GSM/iPhone friendly.
VPPL
16
15
14
13
12
VPPR
39
VDD
XTLI
GND PAD
(Back Paddle)
Top Down View
24-Pin QFN Package
8
AUXOL
9
AUXOR
10
MFP1
XTLO
XTLI
11
OUTSEL/MFP2
RSTB
GND
VDD
NC
NC
NC
NC
48
47
46
45
44
43
42
41
40
NC
38
NC
37
36
35
34
33
32
31
Si270x Digital Class-D Amplifier
2.7 – 3.6 V
Supply
VDD
NC
DFS
DCLK
NC
Functional Block Diagram
1
2
3
4
5
6
7
8
9
10
11
12
RST
DFS
NC
VPPL
OUTPL
GND
OUTNL
GNDL
GNDR
OUTNR
GND
OUTPR
VPPR
NC
LDO
Power
DIN
VIO
CLKO
Clock
Generation
DSP
CH 1
LF
GND
SCLK
PWM
Stage
GND PAD
(Back Paddle)
30
29
28
27
SDIO
CLKO
NC
I
2
S
1.62 – 3.6 V
Supply
MFP
2-Wire Control
VIO
I
2
S/AAD
Mixer
ASRC
Tone Gen.
Cross-over Filter
Volume Control
Tone Control
7-Band EQ
DRC
Feedback
VPP
4.0 – 6.6 V
Supply
NC
NC
Top Down View
48-Pin eTQFP Package
13
14
15
16
17
18
19
20
21
22
23
24
26
25
GND
NC
VOL/MFP1
NC
NC
OUTSEL/MFP2
SLEEP/MFP3
AUXOL
AUXOR
NC
NC
Power
PWM
CH 2
RF
Stage
Over Current
Over Temp
MFP Control
System Control
PWM DAC
AUXOL/R
Rev. 0.6 8/10
Copyright © 2010 by Silicon Laboratories
Si2704/05/06/07-A10
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.
NC
SILABS [ SILICON LABORATORIES ]
