Si4822/26-A10
BROADCAST ANALOG TUNING DIGITAL DISPLAY AM/FM/SW
RADIO RECEIVER
Features
Worldwide FM band support Minimal BOM components with no
(64109 MHz) manual alignment
Worldwide AM band support Excellent real-world performance
(5041750 kHz) Automatic frequency control (AFC)
SW band support (Si4826 only) Two AAA batteries with 2.0 to 3.6 V
(2.328.5 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
Ordering Information:
Mono output
RoHS compliant
See page 19.
Valid station indicator Not EN55020 compliant *
*Note: For consumer applications that
Digital volume support
require EN 55020 compliance, use
Bass/Treble support
Pin Assignments
Si4840/44.
Applications
Si4822/26-A10 (SSOP)
Table and portable radios Modules for consumer electronics
Boom boxes Toys, lamps, and any application
1 24 AOUT
LNA_EN
needing an AM/FM radio
Clock radios 2 23
IRQ NC
3 22
DBYP
TUNE1
Description
4 21 VDD2
TUNE2
5 20
VDD1
BAND
The Si4822/26 is the entry level analog-tuned digital-display digital CMOS
6 19 XTALI
NC
AM/FM/SW radio receiver IC that integrates the complete receiver function from
7 18
NC XTALO
2
antenna input to audio output. Working with Host MCU (I C-compatible 2-wire
8 17
FMI SCLK
control interface), frequencies information can be displayed on LCD, while the
9 16
RFGND SDIO
analog-tune features are kept. Leveraging Silicon Laboratories' proven and
10 15 RST
NC
patented digital low intermediate frequency (low-IF) receiver architecture, the
11 14
NC GND
Si4822/26 delivers superior RF performance and interference rejection. The
12 13
GND
AMI
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.
This product, its features, and/or its
Functional Block Diagram
architecture is covered by one or more of
the following patents, as well as other
patents, pending and issued, both
Si4822/26
Si4830/34
foreign and domestic: 7,127,217;
ADC
AMI 7,272,373; 7,272,375; 7,321,324;
AM
LNA DSP DAC
AOUT 7,355,476; 7,426,376; 7,471,940;
ANT
RFGND
7,339,503; 7,339,504.
ADC
AGC
FM
FMI
ANT
0/90
TUNE1/2
ADC
AFC
XTALI BAND
CONTROL INTERFACE
2.0~3.6V
VDD1/2
XTAL
REG
OSC
Rev.1.0 11/11 Copyright 2011 by Silicon Laboratories Si4822/26-A10
IRQ
SCLK
SDIO
RSTSi4822/26-A10
2 Rev.1.0