SI4709-B-GM Silicon Laboratories Inc, SI4709-B-GM Datasheet - Page 13

• Manufacturer Part Number: SI4709-B-GM
• Description: IC FM RADIO TUNER 20-QFN
• Manufacturer: Silicon Laboratories Inc
• Series: -r

Specifications of SI4709-B-GM

• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

4. Functional Description
4.1. Overview
The Si4708/09 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. Si4708/09 software is
backwards compatible to existing Si4700/01/02/03 FM
Tuner designs and leverages Silicon Laboratories'
highly successful and patented Si4700/01/02/03 FM
tuner. The Si4708/09 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
6.25 mm
capacitor.
The device offers significant programmability, catering
to the subjective nature of FM listeners’ audio
preferences and variable FM broadcast environments
worldwide.
The Si4709 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/RDBS* enables data such as station identification
and song name to be displayed to the user. The Si4709
offers a detailed RDS view and a standard view,
allowing adopters to selectively choose granularity of
2
decoding,
board space and one external bypass
count,
Headphone
32.768 kHz
Cable
flexible
block
RFGND
RCLK
FMI
VD
VA
Figure 6. Si4708/09 FM Receiver Block Diagram
synchronization,
LNA
programmability,
TUNE
AGC
REG
0 / 90
Confidential Rev. 1.4
PGA
AFC
error
and
ADC
ADC
RDS status, data, and block errors. Si4709 RDS
software is backwards compatible to the proven
Si4701/03, adopted by leading cell-phone and MP3
manufacturers world-wide.
The Si4708/09 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 as the Si4700/01/02/03 and supports multiple
bus modes. Power management is simplified with an
integrated regulator allowing direct connection to a 2.7
to 5.5 V battery for V
The Si4708/09 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.
*Note: RDS/RBDS is referred to as RDS throughout the
4.2. FM Receiver
The Si4708/09 architecture and antenna design
increases system performance. To ensure proper
performance and operation, designers should refer to
the
Schematic,
Conformance to these guidelines will help to ensure
excellent performance in weak signal, noisy, and
crowded signal environments where many strong
channels are present.
Q
I
guidelines
(Si4709)
LOW-IF
remainder of this document.
RSSI
DSP
RDS
Si4708/09
Layout,
GPIO
DAC
DAC
in
D
and 2.7 to 5.5 V battery for V
"AN350:
LOUT
ROUT
SCLK
SDIO
GPO
RST
SEN
VIO
and
Si4708/09-B
Design
Si4708/09
Guidelines".
Antenna,
A
.
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