Si4827/40/44 Analog-Tuned Digital Display AM/FM/SW Radio Receiver

Si4827/40/44 devices 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. Working with a host MCU compatible 2-wire control interface, frequencies and stereo/mono information can be displayed on an LCD, while analog-tune features are kept intact. 

Built on our proven and patented digital low intermediate frequency (low-IF) receiver architecture, Si4827/40/44 ICs deliver superior RF performance and interference rejection. The integrated superior control algorithm provides an easy and reliable control interface while eliminating all of the manual tuned external components used in a traditional solution. For consumer applications requiring EN 55020 compliance, use Si4840/44 devices.

Antenna support
Wide range
Minimal BOM components with
No manual alignment

Common Specs

  • Worldwide FM band support (64–109 MHz)
  • Worldwide AM band support (504–1750 kHz)
  • SW band support (2.3–28.5 MHz) (Si4826/27/44 only)
  • Selectable support for all AM/FM regional bands
  • 2-wire control interface
  • Mono/Stereo and valid station indicator
  • Digital volume support
  • Bass/Treble support
  • Minimal BOM components with no manual alignment
  • Excellent real-world performance
  • Automatic frequency control (AFC)
  • EN55020 compliant
  • Two AAA batteries with 2.0 to 3.6 V supply voltage
  • Wide range of ferrite loop sticks and air loop antenna support
  • 24-pin SSOP package
  • RoHS compliant
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Part Number Tuning Method RDS FM AM SW LW WB TX EN55020

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