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Silicon Laboratories - BROADCAST MECHANICAL TUNING AM/FM/SW RADIO RECEIVER

Numéro de référence Si4825-A10
Description BROADCAST MECHANICAL TUNING AM/FM/SW RADIO RECEIVER
Fabricant Silicon Laboratories 
Logo Silicon Laboratories 





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Si4825-A10 fiche technique
Si4825-A10
BROADCAST MECHANICAL TUNING AM/FM/SW RADIO RECEIVER
Features
Worldwide FM band support
(64–109 MHz)
Worldwide AM band support
(504–1750 kHz)
SW band support
(2.3–28.5 MHz)
No manual alignment necessary
Mono audio output
Selectable support AM/FM/SW
regional bands
Enhanced FM/SW band coverage
Automatic frequency control (AFC)
Integrated LDO regulator
2.0 to 3.6 V supply voltage
Wide range of ferrite loop sticks and
air loop antennas supported
16-pin SOIC
RoHS-compliant
Direct volume control
Not EN55020 compliant*
*Note: For consumer applications that
require EN 55020 compliance,
use Si483x.
Applications
Table and portable radios
Mini/micro systems
CD/DVD players
Boom boxes
Modules
Clock radios
Mini HiFi
Entertainment systems
Description
The Si4825 is the entry level mechanical-tuned digital CMOS AM/FM/SW radio
receiver IC that integrates the complete receiver function from antenna input to
audio output. The Si4825 extends Silicon Laboratories multi-band tuner family,
and further increases the ease and attractiveness of design radio reception to
audio devices through small size and board area, minimum component count, and
superior, proven performance. The Si4825 requires a simple application circuit
and removes any requirements for manually tuning components during the
manufacturing process. The receiver has very low power consumption, runs off
two AAA batteries, and delivers the performance benefits of digital tuning to the
analog radio market.
Functional Block Diagram
AM
ANT
FM
ANT
AMI
RFGND
FMI
XTALI
2.0~3.6V VDD
LNA
AGC
0/90
AFC
REG
XTAL
OSC
Si4Si8438205/34
ADC
DSP DAC
ADC
AOUT
CONTROL INTERFACE
ADC
TUNE1/2
BAND
Ordering Information:
See page 14.
Pin Assignments
Si4825-A10 (SOIC)
LNA_EN
TUNE1
TUNE2
BAND
NC
FMI
RFGND
AMI
1
2
3
4
5
6
7
8
16 AOUT
15 GND
14 VDD
13 XTALI
12 XTALO
11 VOL-
10 VOL+
9 RST
This product, its features, and/or its
architecture is covered by one or more of
the following patents, as well as other
patents, pending and issued, both
foreign and domestic: 7,127,217;
7,272,373; 7,272,375; 7,321,324;
7,355,476; 7,426,376; 7,471,940;
7,339,503; 7,339,504.
Rev. 1.0 5/13
Copyright © 2013 by Silicon Laboratories
Si4825
This information applies to a product under development. Its characteristics and specifications are subject to change without notice.

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