SI4701 Silicon Laboratories, SI4701 Datasheet
SI4701
Manufacturer Part Number
SI4701
Description
(SI4700 / SI4701) Broadcast FM Radio Tuner
Manufacturer
Silicon Laboratories
Datasheet
1.SI4701.pdf
(2 pages)
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Description
The Si4700 is the industry's first FM radio tuner IC to
leverage digital integration and 100% CMOS process
technology, resulting in a completely integrated solution
that requires only one external supply bypass capacitor
and less than 20 mm
integration, the Si4700 allows FM radio reception to be
added to a variety of portable devices where board space,
performance, low power consumption, and ease of use are
essential.
Leveraging Silicon Laboratories' proven Aero
intermediate frequency (low-IF) receiver architecture and
frequency synthesizer technology, the Si4700 delivers
superior RF performance and interference rejection. Digital
signal processing is utilized to provide optimum sound
quality with varying reception conditions.
The high integration and complete system production test
simplifies design-in, increases quality, and improves
manufacturing. The Si4700 also uses a streamlined
programming model, which further reduces product
development time. Power management is also simplified
with an integrated regulator allowing direct connection to a
2.7 to 5.5 V battery.
The Si4701 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. Using this feature, the
Si4701 enables data such as station identification and
song name to be displayed to the user.
FM Tuner
Headphone
32.768 kHz
2.7 - 5.5 V
Cable
RCLK
FMIN
FMIP
VA
VD
2
of board space. Offering unmatched
TUNE
AGC
REG
Broadcast FM Radio Tuner for Portable Applications
Copyright © 2005 by Silicon Laboratories
0 / 90
®
digital low
PGA
AFC
ADC
ADC
Features
- Worldwide FM band support (76–108 MHz)
- 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
- Line-level analog output
- 32.768 kHz reference clock
- RDS/RBDS processor (Si4701 only)
- 2-wire and 3-wire control interface
- 2.7 to 5.5 V supply voltage
- Integrated LDO regulator allows direct connection
- 4x4 mm 24-pin QFN package
Applications
- Cellular handsets
- MP3 players
- PDAs, Notebook PCs
- Portable radios
- USB FM radio
Q
I
to battery
-
Lead-free/RoHS compliant
(Si4701)
DEMOD
FILTER
LOW-IF
AUDIO
RSSI
MPX
RDS
DSP
Si4700/01
GPIO
DAC
DAC
ROUT
LOUT
SCLK
GPIO
Si4700/01
SDIO
SEN
RST
VIO
7.11.05
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SI4701 Summary of contents
Page 1
... Power management is also simplified with an integrated regulator allowing direct connection to a 2.7 to 5.5 V battery. The Si4701 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 ...
Page 2
... Tuner 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 Test Condition (S+N)/ ∆ kHz, RDS BLER = 5% |f – > 1 MHz – f ...