SI4702 [SILICON]
Broadcast FM Radio Tuner for Portable Applications; 广播FM收音机调谐器用于便携式应用
| 型号： | SI4702 |
| 厂家： | 
SILICON |
| 描述： | Broadcast FM Radio Tuner for Portable Applications |
| 文件： | 总2页 (文件大小：186K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Si4702/03
Broadcast FM Radio Tuner for Portable Applications
Description
Features
The Si4702/03 extends Silicon Laboratories Si4700 FM tuner
family, and further increases the ease and attractiveness of
adding FM radio reception to mobile devices through small size
and board area, minimum component count, flexible
programmability, and superior, proven performance. Si4702/03
software is backwards compatible to existing Si4700/01 FM tuner
designs and leverages Silicon Laboratories' highly successful
and patented Si4700/01 FM tuner. The Si4702/03 benefits from
proven digital integration and 100% CMOS process technology,
resulting in a completely integrated solution. It is the industry's
- Worldwide FM band support (76–108 MHz)
- 3x3 mm 20-pin QFN package
- Pb-free/RoHS compliant
- Digital low-IF receiver
- Frequency synthesizer with integrated VCO
- Seek tuning
- Automatic frequency control (AFC)
- Automatic gain control (AGC)
- Excellent overload immunity
- Signal strength measurement
- Programmable de-emphasis (50/75 µs)
- Adaptive noise suppression
- Volume control
2
smallest footprint FM tuner IC requiring only 10 mm board
space and one external bypass capacitor.
The device offers significant programmability. It can be adapted
to subjective listening requirements, and it allows adjustability in
important parameters such as seek/tune, allowing the Si4702/03
to outperform other solutions by finding more valid stations and
not stopping on frequencies that do not have a radio station.
- Line-level analog output
The Si4703 incorporates a digital processor for the European
Radio Data System (RDS) and the US Radio Broadcast Data
System (RBDS) including all required symbol decoding, block
synchronization, error detection, and error correction functions.
- 32.768 kHz reference clock
- RDS/RBDS processor (Si4703 only)
- 2-wire and 3-wire control interface
- 2.7 to 5.5 V supply voltage
- Integrated LDO regulator allows direct connection
to battery
RDS enables data such as station identification and song name
to be displayed to the user. The Si4703 offers a detailed RDS
view and a standard view, allowing adopters to selectively
choose granularity of RDS status, data, and block errors. Si4703
software is backwards compatible to the proven Si4701, adopted
by leading cell-phone and MP3 manufacturers world-wide.
Applications
- Cellular handsets
The Si4702/03 is based on the superior, proven performance of
Silicon Laboratories' Aero architecture offering unmatched
interference rejection and leading sensitivity. The device uses
the same programming interface as the Si4700/01 and supports
multiple bus-modes. Power management is also simplified with
an integrated regulator allowing direct connection to a 2.7 to
5.5 V battery.
- MP3 players
- PDAs, Notebook PCs
- Portable radios
- Portable navigation
- Automobile applications
- Consumer electronics
- USB FM radios
The Si4702/03 device’s high level of integration and complete
FM system production testing increases quality to
manufacturers, improves device yields, and simplifies device
manufacturing and final testing.
Headphone
Cable
Si4702/03
DSP
I
LOUT
DAC
DAC
GPIO
ADC
FMIP
FILTER
DEMOD
MPX
LNA
PGA
RFGND
Q
ADC
ROUT
GPIO
AUDIO
AGC
TUNE
REG
0 / 90
LOW-IF
32.768 kHz
2.7–5.5 V
VIO
RST
RCLK
RDS
(Si4703)
AFC
SDIO
SCLK
SEN
VA
VD
XTAL
OSC
RSSI
FM Tuner
Copyright © 2006 by Silicon Laboratories
8.10.06
Si4702/03
Broadcast FM Radio Tuner for Portable Applications
Selected Electrical Specifications
Parameter
Input Frequency
Symbol
Test Condition
Min
76
—
Typ
—
Max
108
—
Unit
MHz
fRF
Sensitivity
Input IP3
(S+N)/N = 26 dB
2.5
108
µV EMF
dBµV EMF
|f2 – f1| > 1 MHz; f0 = 2 x f1 – f2
AGC disabled
—
—
Adjacent Channel Selectivity
Alternate Channel Selectivity
RCLK Frequency
±200 kHz
±400 kHz
—
—
50
70
32.768
—
—
—
dB
dB
—
—
kHz
ppm
mVrms
Hz
RCLK Frequency Tolerance
Audio Output Voltage
Audio Band Limits
Audio S/N
–200
72
30
—
200
90
80
—
±1.5 dB
15k
—
63
0.1
—
dB
Audio THD
—
0.5
5.5
3.6
85
%
Supply Voltage
VD, VA
VIO
TA
2.7
1.5
–20
—
V
Interface Supply Voltage
Ambient Temperature
Supply Current
—
V
25
18
5
°C
IAD
—
mA
Powerdown Current
Seek/Tune Time
IPD
—
15
µA
—
—
60
ms/channel
MHz
kHz
ms
SCLK Frequency
fCLK
fSCL
3-wire operation
2-wire operation
From powerdown
—
—
2.5
400
110
—
—
Powerup Time
—
—
Package Information
Pin Assignments
1
2
20
19
18
17 16
15 GND
NC
FMIP
RFGND
GND
3
4
14
13
LOUT
ROUT
GND
PAD
RST
5
6
12 GND
11 VD
7
8
9
10
Symbol
Millimeters
Symbol
Millimeters
Min
0.50
0.00
0.18
0.27
Nom
0.55
Max
0.60
0.05
0.30
0.37
Min
Nom
Max
A
A1
b
f
2.53 BSC
0.02
L
0.35
0.00
—
0.40
—
0.45
0.10
0.10
0.10
0.08
0.10
0.10
0.25
L1
c
0.32
aaa
bbb
ccc
ddd
eee
—
D
3.00 BSC
1.70
—
—
D2
e
1.65
1.60
1.75
1.80
—
—
0.50 BSC
3.00 BSC
1.70
—
—
E
—
—
E2
FM Tuner
Copyright © 2006 by Silicon Laboratories
8.10.06
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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