Skyworks Si4844-DEMO User Manual

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1. Features
ATDD (analog tune and digital display) FM/AM/SW radio
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Worldwide FM band support from 64 to 109 MHz with 5 default sub-bands:
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FM1 87–108 MHz (Demo Board Default)
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FM2 86.5–109 MHz
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FM3 87.3 –108.25 MHz
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FM4 76– 90 MHz
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FM5 64–87 MHz (Demo Board Default)
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Worldwide AM band support from 504 kHz to 1750 kHz with 5 default sub-bands:
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AM1 520–1710 kHz (Demo Board Default)
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AM2 522–1620 kHz (Demo Board Default)
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AM3 504–1665 kHz
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AM4 520–1730 kHz
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AM5 510 –1750 kHz
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Worldwide SW band support from 2.3 to 22 MHz with 16 default sub-bands:
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SW1 5.6–6.4 MHz (DEMO Board Default)
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SW2 5.95–6.2 MHz
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SW3 6.8–7.6 MHz (DEMO Board Default)
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SW4 7.1–7.6 MHz
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SW5 9.2 –10 MHz (DEMO Board Default)
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SW6 9.2–9.9 MHz
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SW7 11.45 –12.25 MHz (DEMO Board Default)
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SW8 11.6–12.2 MHz
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SW9 13.4–14.2 MHz (DEMO Board Default)
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SW10 13.57 - 13.87 MHz
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SW11 15–15.9 MHz (DEMO Board Default)
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SW12 15.1–15.8 MHz
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SW13 17.1–18 MHz (DEMO Board Default)
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SW14 17.48–17.9 MHz
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SW15 21.2–22 MHz (DEMO Board Default)
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SW16 21.45–21.85 MHz
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Supports wider FM/SW band range
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Twelve positions slide switch or one push button for selecting different bands according to the target
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application
Two AAA battery operations with working voltage down to 2.0 V
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Economical potentiometer for frequency tuning replaces more expensive variable capacitor (PVC)
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Potentiometer and/or push button volume control
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FM 50 µs or 75 µs (default) de-emphasis
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9-level Bass/Treble via push button control for FM
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7-level Bass/Treble via push button control for AM/ SW
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FM/AM/SW band indicator and frequency display in LCD
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2×4 matrix keypad
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The frequency range of each band, de-emphasis, and AM channel space can be re-configured by host MCU.
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Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com
Rev. 0.1 • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • October 6, 2021
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