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SI4731 데이터시트(PDF) 1 Page - Silicon Laboratories

부품명 SI4731
상세설명  Broadcast AM/FM Radio Receiver
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제조업체  SILABS [Silicon Laboratories]
홈페이지  http://www.silabs.com
Logo SILABS - Silicon Laboratories

SI4731 데이터시트(HTML) 1 Page - Silicon Laboratories

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AM/FM Receiver
Copyright © 2007 by Silicon Laboratories
6.15.07
ADC
ADC
Si473x
DSP
DAC
DAC
FMI
FM
ANT
VIO
1.5–3.6 V
CONTROL
INTERFACE
ROUT
LOUT
LDO
VDD
GND
2.7–5.5 V
RDS
(Si4731)
AM
ANT
RFGND
AMI
LNA
LNA
LOW-IF
AGC
AGC
AFC
Si4730/31
Broadcast AM/FM Radio Receiver
Description
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.
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.
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.
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.
Features
- 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
- 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
- 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
- Stereos
- Mini/micro systems
- Portable media players
- Boomboxes
- Cellular handsets
- Clock radios
- Modules
- Entertainment systems


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