SI4822-A10 Datasheet, PDF (1/24 Pages) Silicon Laboratories – BROADCAST ANALOG TUNING DIGITAL DISPLAY AM/FM/SW RADIO RECEIVER

Si4822/26-A10
BROADCAST ANALOG TUNING DIGITAL DISPLAY AM/FM/SW
RADIO RECEIVER
Features
 Worldwide FM band support
 Minimal BOM components with no
(64–109 MHz)
manual alignment
 Worldwide AM band support
 Excellent real-world performance
(504–1750 kHz)
 Automatic frequency control (AFC)
 SW band support (Si4826 only)
 Two AAA batteries with 2.0 to 3.6 V
(2.3–28.5 MHz)
supply voltage (T = 25 °C)
 Selectable support for all AM/FM/SW _{ Wide range of ferrite loop sticks and}
regional bands
air loop antenna support
 2-wire control interface
 24-pin SSOP package
 Mono output
 RoHS compliant
 Valid station indicator
 Not EN55020 compliant *
 Digital volume support
 Bass/Treble support
*Note: For consumer applications that
require EN 55020 compliance, use
Si4840/44.
Applications
 Table and portable radios
 Boom boxes
 Clock radios
Description
 Modules for consumer electronics
 Toys, lamps, and any application
needing an AM/FM radio
The Si4822/26 is the entry level 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 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
Si4822/26 delivers superior RF performance and interference rejection. The
superior control algorithm integrated in Si4822/26 provides easy and reliable
control interface while eliminating all the manual tuned external components used
in traditional solutions.
Functional Block Diagram
AMI
AM
ANT
RFGND
FM
ANT
FMI
XTALI
2.0~3.6V VDD1/2
LNA
AGC
0/90
AFC
REG
XTAL
OSC
Si4^S8ⁱ⁴3⁸0²/²3^/4²⁶
ADC
DSP
DAC
ADC
AOUT
ADC
CONTROL INTERFACE
TUNE1/2
BAND
Ordering Information:
See page 19.
Pin Assignments
Si4822/26-A10 (SSOP)
LNA_EN
1
IRQ
2
TUNE1
3
TUNE2
4
BAND
5
NC
6
NC
7
FMI
8
RFGND
9
NC
10
NC
11
AMI
12
24
AOUT
23
NC
22
DBYP
21
VDD2
20
VDD1
19
XTALI
18
XTALO
17
SCLK
16
SDIO
15
RST
14
GND
13
GND
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 11/11
Copyright © 2011 by Silicon Laboratories
Si4822/26-A10