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AM/FM Receiver Copyright © 2010 by Silicon Laboratories 2.24.2010
Si4830
Broadcast Mechanical Tuning AM/FM Radio Receiver
Description
The Si4830 is the first wheel-tuned digital CMOS AM/FM
radi
o receiver IC that integrates the complete receiver
function from antenna input to audio output. Leveraging
Silicon Laboratories' proven and patented digital low
intermediate frequency (low-IF) receiver architecture, the
Si4830 delivers superior RF performance and interference
rejection in both AM and FM bands. Additionally, the digital
core provides advanced audio conditioning for all
environments, removing pops, clicks, and loud static in
variable signal conditions. The superior control algorithm
integrated in Si4830 provides easy and reliable control
interface while eliminating all the manual tuned external
components used in traditional solutions.
Like other successful audio products from Silicon Labs,
Si48
30 offers unmatched integration and PCB space
savings with minimum external components and less than
20 mm
2
of board area, excluding the antenna inputs. The
high integration and complete system production test
simplifies design-in, increases system quality, and
improves manufacturability. The receiver has very low
power consumption, runs off two AAA batteries, and
delivers the performance benefits of digital tuning to the
legacy analog radio market.
Features
- Worldwide FM band support (64–108 MHz)
- Worldwide AM band support (520–1710 kHz)
- Selectable support for all AM/FM regional bands
- Wheel-tuned / Mechanical-tuned frequency support
- Mechanical volume control + off/on
- Excellent real-world performance
- Digital radio with leading low-IF architecture
- Automatic frequency control (AFC)
- Stereo/mono + tuning and stereo indicator
- EN55020 compliant
- Minimal BOM components w/ no manual alignment
- No external MCU required
- Two AAA batteries with 2.0 to 3.6 V supply voltage
(T = 25° C)
- Wide range of ferrite loop sticks and air loop antennas
- 24-pin SSOP package
- RoHS compliant
Applications
- Table and portable radios
- Stereos
- Mini/micro systems
- Boomboxes
- Clock radios
- Modules
- Entertainment systems
- Toys, lamps, and any application needing an AM/FM
radio
ADC
ADC
Si4830
DSP
DAC
DAC
ROUT
LOUT
AFC
TUNE1/2
RFGND
LNA
AMI
AGC
REG
VDD
2.0~3.6V
XTAL
OSC
FMI
0/90
STEREO
XTALO
STATION
BAND
CONTROL
INTERFACE
RST
XTALI
AM
ANT
FM
ANT