Silicon Laboratories SI4830 Fascicule

Description
The Si4830 is the first wheel-tuned digital CMOS AM/FM 
radio 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, 
Si4830 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.

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

Table and portable radios

Stereos

Mini/micro systems

Boomboxes

Clock radios

Modules

Entertainment systems

Toys, lamps, and any application needing an AM/FM 
radio