Rev. 0.1 5/13
Copyright © 2016 by Silicon Laboratories
Si4844-B-DEMO
S i 4 8 4 4 - B - D E M O
S i 4 8 4 4 - B D
E M O
B
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1.
Features
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.
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