SI4703-B17-GMR Silicon Laboratories Inc, SI4703-B17-GMR Datasheet - Page 13

• Manufacturer Part Number: SI4703-B17-GMR
• Description: IC TUNER FM RADIO RDS/RBDS 20QFN
• Manufacturer: Silicon Laboratories Inc

Specifications of SI4703-B17-GMR

• Frequency: 76MHz ~ 108MHz
• Sensitivity: *
• Data Rate - Maximum: *
• Modulation Or Protocol: *
• Applications: *
• Current - Receiving: *
• Data Interface: PCB, Surface Mount
• Antenna Connector: PCB, Surface Mount
• Features: *
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: *
• Package / Case: 20-VQFN
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Memory Size: -

4. Functional Description
4.1. Overview
The Si4703 extends Silicon Laboratories Si4700 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
superior, proven performance. Si4703 software is
backwards compatible to existing Si4701 FM Tuner
designs and leverages Silicon Laboratories' highly
successful and patented Si4701 FM tuner. The Si4703
benefits from proven digital integration and 100%
CMOS process technology, resulting in a completely
integrated solution. It is the industry's smallest footprint
FM tuner IC requiring only 10 mm
one external bypass capacitor.
The device offers significant programmability, and
caters to the subjective nature of FM listeners and
variable
through a simplified programming interface and mature
functionality.
The Si4703 incorporates a digital processor for the
European Radio Data System (RDS) and the US Radio
Broadcast Data System (RBDS) including all required
symbol
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
Headphone
32.768 kHz
2.7 - 5.5 V
decoding,
FM
Cable
count,
broadcast
RFGND
RCLK
FMIP
VD
VA
flexible
block
LNA
environments
TUNE
AGC
REG
Figure 7. Si4703 FM Receiver Block Diagram
synchronization,
programmability,
2
board space and
XTAL
0 / 90
OSC
world-wide
Confidential Rev. 1.0
PGA
AFC
error
and
RDS status, data, and block errors. Si4703 software is
backwards compatible to the proven Si4701, adopted
by
world-wide.
The Si4703 is based on the superior, proven
performance of Silicon Laboratories' Aero architecture
offering unmatched interference rejection and leading
sensitivity. The device uses the same programming
interface
bus-modes. Power management is also simplified with
an integrated regulator allowing direct connection to a
2.7 to 5.5 V battery.
The Si4703 device’s high level of integration and
complete FM system production testing increases
quality to manufacturers, improves device yields, and
simplifies device manufacturing and final testing.
4.2. FM Receiver
The Si4703’s patented digital low-IF architecture
reduces external components and eliminates the need
for factory adjustments. The receive (RX) section
integrates a low noise amplifier (LNA) supporting the
worldwide FM broadcast band (76 to 108 MHz). An
automatic gain control (AGC) circuit controls the gain of
the LNA to optimize sensitivity and rejection of strong
interferers. For testing purposes, the AGC can be
disabled with the AGCD bit. Refer to Section 6.
"Register Descriptions" on page 20 for additional
programming and configuration information.
The Si4703 architecture and antenna design increases
ADC
ADC
Q
I
leading
DEMOD
FILTER
LOW-IF
AUDIO
RSSI
MPX
DSP
RDS
as
cell-phone
the
Si4703
GPIO
DAC
DAC
Si4701
and
ROUT
LOUT
SCLK
GPIO
SDIO
RST
SEN
VIO
Si4703-B17
and
MP3
supports
manufacturers
multiple
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