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SI4840-A10 Datasheet(PDF) 1 Page - Silicon Laboratories

No. de pieza SI4840-A10
Descripción Electrónicos  BROADCAST ANALOG TUNING DIGITAL DISPLAY AM/FM/SW RADIO RECEIVER
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Fabricante Electrónico  SILABS [Silicon Laboratories]
Página de inicio  http://www.silabs.com
Logo SILABS - Silicon Laboratories

SI4840-A10 Datasheet(HTML) 1 Page - Silicon Laboratories

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Rev.1.0 8/11
Copyright © 2011 by Silicon Laboratories
Si4840/44-A10
Si4840/44-A10
B ROADCAST A NALOG TUNING D IGITAL D ISPLAY AM /F M/SW
R ADIO R ECEIVER
Features
Applications
Description
The Si4840/44 is the first analog-tuned digital-display digital CMOS AM/FM/SW
radio receiver IC that integrates the complete receiver function from antenna input
to audio output. Working with Host MCU (I2C-compatible 2-wire control interface),
frequencies, and stereo/mono information can be displayed on LCD, while the
analog-tune features are kept. Leveraging Silicon Laboratories' proven and
patented digital low intermediate frequency (low-IF) receiver architecture, the
Si4840/44 deliver superior RF performance and interference rejection. The
superior control algorithm integrated in Si4840/44 provides easy and reliable
control interface while eliminating all the manual tuned external components used
in traditional solution.
Functional Block Diagram
Worldwide FM band support
(64–109 MHz)
Worldwide AM band support
(504–1750 kHz)
SW band support (Si4844 only)
(2.3–28.5 MHz)
Selectable support for all AM/FM
regional bands
2-wire control interface
Mono/Stereo and valid station
indicator
Digital volume support
Bass/Treble support
Minimal BOM components with no
manual alignment
Excellent real-world performance
Automatic frequency control (AFC)
EN55020 compliant
Two AAA batteries with 2.0 to 3.6 V
supply voltage (T = 25 °C)
Wide range of ferrite loop sticks and
air loop antenna support
24-pin SSOP package
RoHS compliant
Table and portable radios
Stereos
Mini/micro systems
Boom boxes
Clock radios
Modules for consumer electronics
Entertainment systems
Toys, lamps, and any application
needing an AM/FM radio
Mini HiFi
iPhone docking
Si4830/34
ADC
ADC
DSP
DAC
DAC
ROUT
LOUT
AFC
Si484x
RFGND
LNA
AMI
AGC
REG
VDD1/2
2.0~3.6V
XTAL
OSC
FMI
0/90
AM
ANT
FM
ANT
CONTROL INTERFACE
TUNE1/2
BAND
XTALI
ADC
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.
Ordering Information:
See page 20.
Pin Assignments
Si4840/44-A10 (SSOP)
NC
FMI
RFGND
AMI
BAND
TUNE2
TUNE1
IRQ
LNA_EN
NC
NC
NC
RST
LOUT
ROUT
DBYP
VDD2
SCLK
SDIO
XTALO
XTALI
VDD1
GND
GND
1
2
3
4
5
6
7
8
9
10
11
12
24
23
22
21
20
19
18
17
16
15
14
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