SI4734 [SILICON]
Telecom Circuit, 1-Func, CMOS, QFN-20;
| 型号： | SI4734 |
| 厂家： | 
SILICON |
| 描述： | Telecom Circuit, 1-Func, CMOS, QFN-20 电信 电信集成电路 |
| 文件： | 总2页 (文件大小：201K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Si4734/35
Broadcast AM/FM/SW/LW Radio Receiver
Description
Features
The Si4734/35 is the industry's first fully integrated, 100%
CMOS AM/FM/SW/LW radio receiver IC. Offering
unmatched integration and PCB space savings, the
Si4734/35 requires minimal external components and less
than 20 mm2 of board area, excluding the antenna inputs.
The Si4734/35 AM/FM/SW/LW 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/SW/LW solutions.
- Worldwide FM band support (64–108 MHz)
- Worldwide AM band support(520–1710 kHz)
- SW band support (2.3–21.85 MHz)
- LW band support (153–279 KHz)
- Excellent real-world performance
- Freq synthesizer with integrated VCO
- Automatic frequency control (AFC)
- Automatic gain control (AGC)
- Integrated LDO regulator
- Digital FM stereo decoder
- Programmable de-emphasis
- Adaptive noise suppression
- AM/FM/SW/LW digital tuning
- No manual alignment necessary
- Adjustable channel filters
- EN55020 complaint
- Programmable reference clock
- Digital volume control
Leveraging Silicon Laboratories' proven and patented
Si4700/01 FM tuner's digital low intermediate frequency
(low-IF) receiver architecture, the Si4734/35 delivers
superior RF performance and interference rejection in AM,
FM, and short wave and long wave bands. The high
integration and complete system production test simplifies
design-in, increases system quality, and improves
manufacturability.
The Si4734/35 is
a
feature-rich solution including
- Adjustable soft mute control
advanced seek algorithms, soft mute, auto-calibrated
digital tuning, and FM stereo processing. In addition, the
Si4734/35 provides analog or digital audio output and a
programmable reference clock. The device supports I2C-
compatible 2-wire control interface, SPI, and a Si4700/01
backwards-compatible 3-wire control interface.
- RDS/RBDS processor (Si4735 only)
- Optional digital audio out (Si4735 only)
- 2-wire and 3-wire control interface
- 2.7 to 5.5 V supply voltage
- Wide range of ferrite loop sticks and air loop antennas
supported
- 3 x 3 x 0.55 mm 20-pin QFN package
- Pb-free/RoHS compliant
The Si4734/35 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 the listening experience.
Applications
- Table and portable radios
- Stereos
The Si4735 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 RDS, the
Si4735 enables broadcast data such as station
identification and song name to be displayed to the user.
- Mini/micro systems
- Portable media players
- Boomboxes
- Clock radios
- Modules
- Entertainment systems
- Cellular handsets
FM/SW
ANT
Si4734/35
FMI
DOUT
RDS
(Si4735)
DIGITAL
AUDIO
LNA
DFS
(Si4735)
GPO/DCLK
AGC
LOW-IF
DSP
ADC
ADC
DAC
DAC
ROUT
LOUT
AM/LW
ANT
AMI
LNA
AGC
RFGND
2.7–5.5 V
VDD
GND
CONTROL
INTERFACE
VIO
1.5–3.6 V
LDO
AFC
AM/FM Receiver
Copyright © 2008 by Silicon Laboratories
4.1.08
Si4734/35
Broadcast AM/FM/SW/LW 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 Frequency Reponse Low
Audio Frequency Reponse High
Audio Mono S/N
—
—
±400 kHz
—
—
dB
–3 dB
—
30
—
Hz
–3 dB
15
—
—
kHz
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/SW/LW Electrical Specifications
Parameter
Input Frequency
Symbol
Test Condition
Medium wave (AM)
Short wave (SW)
Long wave (LW)
(S+N)/N = 26 dB
Min
520
2.3
153
—
Typ
—
Max
1710
21.85
279
—
Unit
kHz
fRF
—
MHz
kHz
—
Sensitivity
25
56
0.1
60
µV EMF
dB
Audio S/N
—
—
Audio THD
—
—
%
Audio Output Voltage
54
66
mVrms
Pin Assignments
3 x 3 x 0.55 mm, 20-pin QFN Package Information
20 19 18 17
NC
FMI
1
16
2
15 DOUT
14 LOUT
13 ROUT
12 GND
11 VDD
RFGND
AMI
3
4
5
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 © 2008 by Silicon Laboratories
4.1.08
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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