SI4825 DSP mechanically tuned digital radio

Mechanical Tuned AM/FM/SW Radio Receiver
Features
Application
Description
The Si4825 is an entry-level mechanically tuned digital CMOS AM/FM/SW radio receiver IC that integrates
all receiving functions from antenna input to audio output. The Si4825 expands Silicon Labs' family of multiband tuners
that
further . During production, the Si4825 requires

a simple application circuit and eliminates the need for all manual tuning components during production. This receiver consumes very little
power and operates on two AAA batteries, providing the analog radio market with the performance advantages of digital tuning.
Functional block diagram
 Supports global FM band
(64–109 MHz)
 Supports global AM band
(504–1750 kHz)
 Supports shortwave band
(2.3–28.5 MHz)
 No manual calibration required
 Mono audio output
 AM/FM/SW Regional band optional
∎ Enhanced FM/SW band coverage
∎ Automatic frequency control (AFC)
∎ Integrated LDO regulator
∎ 2.0 to 3.6 V supply voltage
∎ Supports wide-band ferrite rod antenna and air
loop antenna
∎ 16 Pin SOIC
 RoHS compliant
 Direct volume control
 Not EN55020 compliant*
*Note: For
consumer , use the Si483x.
∎ Desktop and Portable Radios
∎ Micro/Small Systems
∎ CD/DVD Players
∎ Speakers
∎ Modules
∎ Timer Radios
∎ Mini HiFi
∎ Entertainment Systems