SI4825-DEMO Silicon Labs

Si4825-DEMO Si4825 DEMO BOARD USERS GUIDE 1. Features ATAD (analog tune and analog display) AM/FM/SW radio Worldwide FM band support 64109 MHz with 18 bands, see the Table 1 Worldwide AM band support 5041750 kHz with 5 bands, see the Table 1 Worldwide SW band support 2.328.5 MHz with 18 wide bands or 18 narrow bands, see the Table 1 Twelve positions band switch for selecting different band according to the target market 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 s or 75 s de-emphasis SW Wide/Narrow-band selection via a slide switch Table 1. Si4825 Band Sequence Definition Band Band Frequency Range De-emphasis (FM) Note Name Channel Space (AM) FM1 87108 MHz 50 s FM2 87108 MHz 50 s FM3 87108 MHz 75 s Demo Board Default FM4 87108 MHz 75 s FM5 86.5109 MHz 50 s FM6 86.5109 MHz 50 s FM7 87.3108.25 MHz 50 s FM8 87.3108.25 MHz 50 s FM9 87.3108.25 MHz 75 s FM10 87.3108.25 MHz 75 s FM11 7690 MHz 50 s FM12 7690 MHz 50 s FM13 6487 MHz 50 s FM14 6487 MHz 50 s FM15 76108 MHz 50 s FM16 76108 MHz 50 s 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 17, 2021Si4825-DEMO Table 1. Si4825 Band Sequence Definition (Continued) Band Band Frequency Range De-emphasis (FM) Note Name Channel Space (AM) FM17 64108 MHz 50 s Demo Board Default FM18 64108 MHz 50 s AM1 5201710 kHz 10k Demo Board Default AM2 522-1620 kHz 9k Demo Board Default AM3 504-1665 kHz 9k AM4 522-1728 kHz / 520-1730 kHz 9k / 10k AM5 510-1750 kHz 10k SW1 SW Wide Band SW Narrow Band 2.310.0MHz 2.302.49MHz SW2 3.27.6 MHz 3.203.40 MHz Demo Board Default SW3 3.210.0 MHz 3.904.00 MHz Demo Board Default SW4 3.712.5 MHz 4.755.06 MHz SW5 3.97.5 MHz 5.6 6.4 MHz SW6 5.622 MHz 5.95 6.2 MHz SW7 5.812.1 MHz 6.87.6 MHz SW8 5.99.50 MHz 7.17.6 MHz SW9 5.918.0 MHz 9.210 MHz Demo Board Default SW10 7.016.0 MHz 11.4512.25 MHz Demo Board Default SW11 7.023.0 MHz 11.612.2 MHz Demo Board Default SW12 9.016.0 MHz 13.414.2 MHz SW13 9.022.0 MHz 13.5713.87 MHz Demo Board Default SW14 9.518.0 MHz 15 15.9 MHz Demo Board Default SW15 10.016.0 MHz 17.1 18 MHz SW16 10.022.0 MHz 17.4817.9 MHz Demo Board Default SW17 13.018.0 MHz 21.222 MHz SW18 18.028.5 MHz 21.45 21.85 MHz 2 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 17, 2021