SI4730 [SILICON]
Broadcast AM/FM Radio Receiver; 广播的AM / FM收音机接收器
| 型号： | SI4730 |
| 厂家： | 
SILICON |
| 描述： | Broadcast AM/FM Radio Receiver |
| 文件： | 总2页 (文件大小：199K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Si4730/31
Broadcast AM/FM Radio Receiver
Description
Features
The Si4730/31 is the industry's first fully integrated, 100%
CMOS AM/FM radio receiver IC. The Si4730/31 AM/FM
radio provides the space savings and low power
consumption necessary for portable devices while
delivering the high performance and design simplicity
desired for all AM/FM solutions. Offering unmatched
integration and PCB space savings, the Si4730/31
requires only two external components and less than 15
mm2 of board area.
- Worldwide FM band support (76–108 MHz)
- Worldwide AM band support (520–1710 kHz)
- AM/FM digital tuning
- Excellent real-world performance
- Only 2 external components
- No manual alignment required
- Adjustable AM channel filters
- Advanced AM/FM seek tuning
- Digital volume control
Leveraging Silicon Laboratories' proven and patented
Si4700/01 FM digital receiver architecture, the Si4730/31
delivers superior RF performance and interference
rejection in both AM and FM bands. The high integration
and complete system production test simplifies design-in,
increases system quality, and improves manufacturability.
The Si4730/31 solution includes advanced seek
algorithms, adjustable soft mute, auto-calibrated digital
tuning, and FM stereo processing. In addition, the Si4730/
31 provides a programmable reference clock, I2C-
compatible 2-wire control interface, and a Si4700/01
backwards-compatible 3-wire control interface.
- Adjustable soft mute control
- Frequency synthesizer with integrated VCO
- Automatic frequency control (AFC)
- Automatic gain control (AGC)
- Programmable AM/FM de-emphasis
- Adaptive noise suppression
- Integrated LDO regulator
- Programmable reference clock
- FM RDS/RBDS processor (Si4731 only)
- 2-wire and 3-wire control interface
- 2.7 to 5.5 V supply voltage
The Si4730/31 utilizes digital processing to achieve high
fidelity, optimal performance, and design flexibility. The
chip provides excellent pilot rejection, selectivity, and
unmatched audio performance, and offers both the
manufacturer and the end-user extensive programmability
and flexibility in listening experience.
- AM ferrite loopstick and air loop antenna support
- 3 x 3 x 0.55 mm 20-pin QFN package
- Pb-free/RoHS compliant
Applications
- Table and portable radios
The Si4731 incorporates a digital processor for the
European Radio Data System (RDS) and the North
American Radio Broadcast Data System (RBDS)
including all required symbol decoding, block
synchronization, error detection, and error correction
functions. Using this feature, the Si4731 enables
broadcast data such as station identification and song
name to be displayed to the end user.
- Stereos
- Mini/micro systems
- Portable media players
- Boomboxes
- Cellular handsets
- Clock radios
- Modules
- Entertainment systems
Si473x
AMI
RDS
(Si4731)
AM
ANT
LNA
RFGND
AGC
LOW-IF
ADC
ADC
DAC
DAC
ROUT
LOUT
FM
ANT
LNA
AGC
DSP
FMI
2.7–5.5 V
VDD
GND
CONTROL
INTERFACE
LDO
AFC
VIO
1.5–3.6 V
AM/FM Receiver
Copyright © 2007 by Silicon Laboratories
6.15.07
Si4730/31
Broadcast AM/FM Radio Receiver
Selected FM Electrical Specifications
Parameter
Input Frequency
Symbol
Test Condition
Min
76
—
Typ
—
Max
108
—
Unit
MHz
µV EMF
µV EMF
dBµV EMF
dB
fRF
Sensitivity headphone matching
Sensitivity 50 Ω matching
Input IP3
(S+N)/N = 26 dB
(S+N)/N = 26 dB
|f2 – f1| > 1 MHz; f0 = 2 x f1 – f2
±200 kHz
2.2
1.1
105
50
70
—
—
—
—
—
Adjacent Channel Selectivity
Alternate Channel Selectivity
Audio Band Limits
—
—
±400 kHz
—
—
dB
±1.5 dB
30
—
15k
—
Hz
Audio S/N
63
0.1
80
—
dB
Audio THD
—
—
%
Audio Output Voltage
Supply Voltage*
72
2.7
1.5
—
90
5.5
3.6
—
mVrms
V
VD, VA
VIO
IPD
Interface Supply Voltage*
Powerdown Current*
—
V
10
µA
*Note: Applies to both FM and AM modes.
Selected AM Electrical Specifications
Parameter
Input Frequency
Symbol
Test Condition
Min
520
—
Typ
—
Max
1710
—
Unit
kHz
fRF
Sensitivity
(S+N)/N = 26 dB
38
58
0.1
60
—
µV EMF
dB
Audio S/N
—
—
Audio THD
—
—
%
Audio Output Voltage
Antenna Inductance
54
66
mVrms
µH
180
600
Pin Assignments
3 x 3 x 0.55 mm, 20-pin QFN Package Information
20 19 18 17
NC
FMI
1
16
2
15 NC
RFGND
AMI
3
4
5
14 LOUT
13 ROUT
12 GND
11 VDD
GND
PAD
RST
6
7
8
9
10
Symbol
Millimeters
Nom
Symbol
Millimeters
Nom
Min
Max
Min
Max
A
A1
b
0.50
0.00
0.18
0.27
0.55
0.02
0.60
0.05
0.30
0.37
f
2.53 BSC
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
1.60
1.60
1.80
1.80
—
—
0.50 BSC
3.00 BSC
1.70
—
—
E
—
—
E2
AM/FM Receiver
Copyright © 2007 by Silicon Laboratories
6.15.07
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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