SI47903 Datasheet, PDF (1/2 Pages) Silicon Laboratories – High-Performance Automotive AM/FM Radio

Si47903/04/05/06
High-Performance Automotive AM/FM Radio
Receiver and HD Radio™/DAB/DAB+/DMB/DRM Tuner
Features
- Worldwide FM band support (64–108 MHz)
- Worldwide AM band support (520–1710 kHz)
- LW band support (144–288 kHz)
- SW band support (2.3–30 MHz)
- DAB/DAB+/DMB support 
(170–240 MHz, 1452–1492 MHz) (Si47905/06 Only)
- NOAA Weather Band support (Si47904/06 Only)
- On-chip soft-decision RDS/RDBS demodulator/decoder
- AM/FM:
- Comprehensive AM/FM signal
processing firmware
- Integrated active AM/FM buffers for 
background/data tuners
- Analog FM phase diversity with two, three or four 
tuners
- Fully integrated AGC for AM and FM inputs
- HD Radio (Si47904/06 only):
- Digital I/Q interface to HD Radio Processor
- HD Radio MRC with two, three, or four tuners
- AM/FM HD Radio IBOC blend
- Fast FM HD Radio band scan
- DAB/DAB+/DMB (Si47905/06 only):
- Digital I/Q interface to DAB/DAB+/DMB processor
- DAB/DAB+/DMB MRC with two, three, or four 
tuners
- Integrated active Band III/L-band buffers for 
background/data tuners
- Fast DAB/DAB+/DMB band scan
- Fully integrated AGC for Band III and L-Band inputs
- Two analog audio outputs
- Two digital audio ports (I²S)
- Frequency synthesizer with fully integrated PLL-VCO
- Integrated clock oscillator
- 1.8 V or 3.3 V digital IO power supplies
- 3.3 V analog power supply and 1.8 V digital power 
supply
- QFN 48-pin, 7x7x0.85 mm
- Pb-free/RoHS compliant
- AEQ-Q100 qualified
Description
The Si4790x analog AM/FM receiver and digital radio tuner
sets a new standard for automotive broadcast reception.
The Si4790x is the most integrated monolithic IC in the
industry with the smallest external bill of materials. Si4790x
based systems can scale from low-cost single tuner AM/
FM radio to highest performance systems with multiple
tuners and multiple antennas, enabling the radio suppliers
to reuse their R&D across multiple product lines, all with a
common software API. The Si4790x meets rigorous
automotive quality standards.
Applications
- Automotive OEM infotainment systems
- Aftermarket car radio systems
LBI
LBO
AGC
LNA
B3I/WXI
B3O
AGC
FMI
FMO
AMVAG
AMI
AMO
AGC
AGC
LNA
LNA
LNA
DAC DAC
Audio
Output
Port 0
IF AGC
ADC
ADC
Blend
Radio
DSP-2
Radio DSP
Audio
Input
Port 0
DEBUGP
DEBUGN
ISFSP
ISFSN
ZIFIOUT
ZIFCLK
ZIFQOUT
ZIFFS
ARM
Cortex M3
Flash
Interface
SPI/I²C
Power
Supplies
VD
VA
VIO1
VIO2
Si47903/04/05/06
Copyright © 2015 by Silicon Laboratories
3.12.2015