SI47901 Datasheet, PDF (1/3 Pages) Silicon Laboratories – High-Performance Automotive AM/FM Radio Receiver

Si47901/02
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) (Si47902 only)
- NOAA Weather Band support
- 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:
- 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 (Si47902 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
Applications
The Si47901/02 analog AM/FM receiver and digital radio
tuner sets a new standard for automotive broadcast
reception.
- Automotive OEM infotainment systems
- Aftermarket car radio systems
The Si47901/02 is the most integrated monolithic IC in the
industry with the smallest external bill of materials.
Si47901/02 based systems can scale from lowcost 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 Si47901/02 meets
rigorous automotive quality standards.
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
Si47901/02
Copyright © 2015 by Silicon Laboratories
3.12.2015