Silicon Labs Si4840 / Si4844 Radio Receiver ICs
The Silicon Labs Si4840 and Si4844 are the first analog-tuned digital-display CMOS AM/FM/SW radio receiver ICs that integrate the complete receiver function from antenna input to audio output. Si4840 and Si4844 radio receiver ICs implement Silicon Labs' proven low-IF digital architecture, providing an easy and reliable control interface while eliminating all the manual tuned external components used in traditional solutions. The architecture also provides the industry's leading receiver performance, with excellent sensitivity and selectivity in all supported bands. Silicon Labs Si4840 and Si4844 radio receiver ICs support industry-leading features for band selection, Bass/Treble boost, European EN 55020/22, and U.S. FCC compliance as well as advanced audio conditioning for all signal environments to remove pops, clicks, and abrasive static. These radio receiver ICs also support interrupts for valid tuned frequencies and stereo/mono signal quality. Si484x devices are designed for use in a variety of applications, including table and portable radios, stereos, mini/micro systems, boom boxes, clock radios, and more.