SI4703-C19-GM Datasheet, PDF (1/2 Pages) Silicon image – Broadcast FM Radio Tuner for Portable Applications

Si4702/03-C19
Broadcast FM Radio Tuner for Portable Applications
Description
The Si4702/03-C19 extends Silicon Laboratories Si4700/
01 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. The Si4702/03 leverage Silicon
Laboratories' highly successful and patented Si4700/01 FM
tuner, and are pin and software compatible to existing
Si4700/01 FM tuner designs. The Si4702/03 benefits from
proven digital integration and 100% CMOS process
technology, resulting in a completely integrated solution.
The Si4702/03 proven and highly flexible functionality
caters to the subjective nature of audio preferences and
variable FM broadcast environments worldwide.
The Si4703-C19 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. 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, PND, and MP3
manufacturers worldwide.
The Si4702/03 device’s high level of integration and
complete FM system increases quality to manufacturers,
improves device yields, and simplifies device
manufacturing and final testing.
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
- 2-wire and 3-wire control interface
- 2.7 to 5.5 V supply voltage
- Integrated LDO regulator allows direct connection
to battery
- 3 x 3 mm 20-pin QFN package
- Pb-free/RoHS compliant
- RDS/RBDS Processor (Si4703)
- Integrated crystal oscillator
Applications
- Cellular handsets
- MP3 players
- Portable radios
- USB FM radio
- PDAs
- Notebook PCs
- Portable navigation
- Consumer electronics
Headphone
Cable
FMIP
RFGND ^LNA
Si4702/03
I
ADC
DSP
DAC
LOUT
PGA
FILTER
DEMOD
Q
ADC
MPX
AUDIO
DAC
ROUT
AGC 0 / 90
32.768 kHz
RCLK _TUNE
AFC
2.7–5.5 V VA
VD ^REG
XTAL
OSC
LOW-IF GPIO
RDS
(Si4703)
RSSI
GPIO
VIO
RST
SDIO
SCLK
SEN
FM Tuner
Copyright © 2008 by Silicon Laboratories
4.3.08