Si4688-A10
Single-Chip, FM/HD/DAB/DAB+ Radio Receiver
Description
The Si4688 single-chip digital receiver is one member of a
family of 100% CMOS digital radio broadcast receiver ICs
from Silicon Labs. The Si468x family offers a complete and
cost-effective digital radio solution integrating the RF tuner,
baseband, and audio processing on a single die. The high
level of integration provides significant customer benefits
compared to traditional digital radio solutions, including a
reduction in system implementation complexity, validation
and testing, and improved reliability and manufacturability.
The Si4688 is compatible with the iBiquity Digital and
NRSC-5 standards for FM In-Band-On-Channel (IBOC)
digital radio broadcasting, integrating digital channel
demodulation and decoding functions, along with audio
decoding and IBOC analog-digital blend. The Si4688
supports IBOC multicasting, as well as the full-range of HD
Radio data services, such as PSD, Artist Experience,
iTunes® Tagging, Bookmark and real-time Traffic, with the
appropriate external decoders.
The Si4688 also offers VHF Band III (168–240 MHz)
reception capability and is fully compliant with ETSI EN 300
401 and ETSI TS 102 563. The Si4688 delivers DAB and
DAB+ via an integrated source decoder that supports both
MPEG Audio Layer 2 (DAB) and HE-AAC V2 (DAB+). The
Si4688 supports data services such as Dynamic Labels,
Intellitext, Electronic Program Guide (EPG), Slideshow,
and Journaline® with the appropriate external decoders.
For more information, visit the Si468x Digital Radio
Receivers web page.
Features
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Worldwide FM band support (76–108 MHz)
Advanced RDS/RBDS decoder
FM HD Radio™ support with on-chip IBOC blend
DAB, DAB+ Band III support (168–240 MHz)
Supports WorldDMB Receiver Profiles 1 and 2
Integrated OFDM channel demodulator
Integrated de-interleaving SRAM
I
2
S digital audio out with ASRC
Integrated 97 dB stereo audio DAC
Concurrent I
2
S/L-R stereo audio out
Full range of signal quality metrics
Fully-integrated VCO / PLL / synthesizer
SPI and I
2
C host control interfaces
WLCSP 62-ball, 3.2x3.77x0.59 mm
QFN 48-pin, 7x7x0.85 mm
Mobile phones and tablets
Clock and tabletop radios
Stereo boomboxes
Mini/micro systems
Docking stations
Personal navigation devices
Applications
Si4688-A10
RFREF
VHFI
ADC
LNA
ADC
AGC
RDS
I2S
DCLK
DFS
DOUT
SCLK
SSB
MISO
MOSI
DSP
DAC
ROUT
DAC
LOUT
VHFSW
VHF SW
LDOs
CLK
Gen
FLASH
Interface
Control
NVSCLK
NVSSB
INTB
VA
Digital Radio Receiver
Copyright © 2013 by Silicon Laboratories
NVMOSI
NVMISO
VCORE
VMEM
XTALI
XTALO
RSTB
VIO
05.07.2013
Si4688-A10
Single-Chip, FM/HD/DAB/DAB+ Radio Receiver
Selected Electrical Specifications
Parameter
Ambient Temperature
Analog Supply Voltage
Interface Supply Voltage
Core Digital Supply Voltage
Memory Supply Voltage
Analog FM
Input Frequency
Seek Time
Input IP3
Sensitivity
FM HD
Input Frequency
Seek Time
DAB/DAB+
Input Frequency
Enable Acquisition Time
F
rf
168
—
—
—
240
940
MHz
ms
F
rf
87.5
—
—
—
108
120
MHz
ms/ch
SINAD = 26 dB
F
rf
76
—
—
—
—
96
0.7
108
60
—
MHz
ms/ch
dBµV
µV
Symbol
T
A
V
A
V
IO
V
CORE
V
MEM
Test Conditions
Min
–40
1.71
1.62
1.62
1.62
Typ
25
1.8
1.8
1.8
1.8
Max
85
2.0
3.6
2.0
2.0
Units
°C
V
V
V
V
Si4688-A10-GM (QFN)
Si4688-A10-GD (WLCSP
)
Dimension
A
A1
b
D
D2
e
E
E2
L
aaa
bbb
ddd
eee
Notes:
1.
2.
3.
4.
Min
0.80
0.00
0.18
5.20
Nom
0.85
0.02
0.25
7.00 BSC
5.30
0.50 BSC
7.00 BSC
Max
0.90
0.05
0.30
5.40
5.20
0.30
5.30
0.40
0.15
0.10
0.05
0.08
5.40
0.50
All dimensions are shown in millimeters (mm) unless otherwise
noted.
Dimensioning and tolerancing per ASME Y14.5M-1994.
This drawing conforms to JEDEC Outline MO-220, Variation
VKKD-4.
Recommended card reflow profile is per the JEDEC/IPC J-
STD-020 specification for Small Body Components.
Dimension
Min
Nom
Max
A
0.55
0.59
0.63
A1
0.18
0.20
0.22
b
0.22
0.27
0.32
D
3.20 BSC.
E
3.77 BSC.
d
0.40 BSC.
e
0.40 BSC.
D1
2.40 BSC.
E1
3.20 BSC.
aaa
0.10
bbb
0.10
ccc
0.03
ddd
0.15
eee
0.05
Notes:
1.
All dimensions shown are in millimeters (mm) unless otherwise
noted.
2.
Dimensioning and Tolerancing per ANSI Y14.5M-1994.
3.
Primary datum "C" and seating plane are defined by the spherical
crowns of the solder balls.
4.
Dimension "b" is measured at the maximum solder bump diameter,
parallel to primary datum "C".
5.
Recommended card reflow profile is per the JEDEC/IPC J-STD-020
specification for Small Body Components.
Digital Radio Receiver
Copyright © 2013 by Silicon Laboratories
05.07.2013
Silicon Laboratories and Silicon Labs are trademarks of Silicon Laboratories Inc.
Other products or brandnames mentioned herein are trademarks or registered trademarks of their respective holders
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