First fully integrated receiver
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The Si473x multiband receivers are changing the way AM/FM radios are designed. The Si473x receivers are the first fully integrated AM/FM, AM/FM/SW/LW, and AM/FM weather band receiver ICs offering a single chip from antenna input to audio output. They only require two external components for clear radio operation and have a total solution size twenty times smaller than competitive solutions. The Si473x receivers offer unparalleled integration and best-in-class performance with the most features and flexibility. Best of all, they eliminate the need for hand-tuned components used by traditional AM/FM solutions. With the increase in the cost of labor in China, the Si473x saves customers significant time and money.
Features
- 3x3x0.55 mm 20-pin Pb- free QFN package
- Worldwide FM band support (76 to 108 MHz)
- Worldwide AM band support (520 to 1710 kHz)
- Short-wave & long-wave band support (Si4734/5)
- Weather band support (Si4736/7/8/9)
- Excellent real-world performance
- Integrated RDS/RBDS processor (Si4731/5/7/9)
- Advanced AM/FM seek tuning
- Digital FM stereo decoder
- Programmable soft mute control
- Frequency synthesizer with integrated VCO
- Automatic gain control (AGC)
- Automatic frequency control (AFC)
- AM/FM digital tuning
- No manual alignment required
- EN55020 certified compliance
- Analog and digital audio interface
- Programmable reference clock input
- Programmable de-emphasis (50/75 µs)
- 2-wire and 3-wire control interface
- Integrated LDO regulator
- Wide range of AM loop and ferrite antennas supported with on-chip varactor
- 2.7 to 5.5 V supply voltage
Si473x Evaluation Kits and Demonstration Boards Available
Customers can get a jumpstart on their design with the Si4731-B-EVB, Si4735-B-EVB, or Si4737-B-EVB evaluation board or a standalone Si4731-DEMO demonstration board (no PC necessary). The EVBs come complete with schematics and layout files and a graphical user interface (GUI).