Silicon Laboratories Si4844-B Series User Manual

Si4844-B D
Features
1.
 ATDD (analog tune and digital display) FM/AM/SW radio
 Worldwide FM band support from 64 to 109 MHz with 5 default sub-bands:
FM1 87–108 MHz (Demo Board Default)

FM2 86.5–109 MHz

FM3 87.3 –108.25 MHz

FM4 76– 90 MHz

FM5 64–87 MHz (Demo Board Default)

 Worldwide AM band support from 504 kHz to 1750 kHz with 5 default sub-bands:
AM1 520–1710 kHz (Demo Board Default)

AM2 522–1620 kHz (Demo Board Default)

AM3 504–1665 kHz

AM4 520–1730 kHz

AM5 510 –1750 kHz

 Worldwide SW band support from 2.3 to 22 MHz with 16 default sub-bands:
SW1 5.6–6.4 MHz (DEMO Board Default)

SW2 5.95–6.2 MHz

SW3 6.8–7.6 MHz (DEMO Board Default)

SW4 7.1–7.6 MHz

SW5 9.2 –10 MHz (DEMO Board Default)

SW6 9.2–9.9 MHz

SW7 11.45 –12.25 MHz (DEMO Board Default)

SW8 11.6–12.2 MHz

SW9 13.4–14.2 MHz (DEMO Board Default)

SW10 13.57 - 13.87 MHz

SW11 15–15.9 MHz (DEMO Board Default)

SW12 15.1–15.8 MHz

SW13 17.1–18 MHz (DEMO Board Default)

SW14 17.48–17.9 MHz

SW15 21.2–22 MHz (DEMO Board Default)

SW16 21.45–21.85 MHz

 Supports wider FM/SW band range
 Twelve positions slide switch or one push button for selecting different bands according to the target
application
 Two AAA battery operations with working voltage down to 2.0 V
 Economical potentiometer for frequency tuning replaces more expensive variable capacitor (PVC)
 Potentiometer and/or push button volume control
 FM 50 µs or 75 µs (default) de-emphasis
 9-level Bass/Treble via push button control for FM
 7-level Bass/Treble via push button control for AM/ SW
 FM/AM/SW band indicator and frequency display in LCD
 2×4 matrix keypad
 The frequency range of each band, de-emphasis, and AM channel space can be re-configured by host
MCU.
Rev. 0.1 5/13
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