SI4825-DEMO Datasheet, PDF (1/12 Pages) Silicon Laboratories – Si4825 DEMO BOARD USERS GUIDE

Si4825-DEMO
Si4825 DEMO BOARD USER’S GUIDE
1. Features
ATAD (analog tune and analog display) AM/FM/SW radio
Worldwide FM band support 64–109 MHz with 18 bands, see the Table 1
Worldwide AM band support 504–1750 kHz with 5 bands, see the Table 1
Worldwide SW band support 2.3–28.5 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 µs or 75 µs de-emphasis
SW Wide/Narrow-band selection via a slide switch
Table 1. Si4825 Band Sequence Definition
Band
Name
Band Frequency Range
De-emphasis (FM)
Channel Space (AM)
Note
FM1 _{87–108 MHz}
FM2 _{87–108 MHz}
FM3 _{87–108 MHz}
FM4 _{87–108 MHz}
FM5 _{86.5–109 MHz}
FM6 _{86.5–109 MHz}
FM7 _{87.3–108.25 MHz}
FM8 _{87.3–108.25 MHz}
FM9 _{87.3–108.25 MHz}
FM10 _{87.3–108.25 MHz}
FM11 _{76–90 MHz}
FM12 _{76–90 MHz}
FM13 _{64–87 MHz}
FM14 _{64–87 MHz}
FM15 _{76–108 MHz}
FM16 _{76–108 MHz}
FM17 _{64–108 MHz}
FM18 _{64–108 MHz}
AM1 _{520–1710 kHz}
50 µs
50 µs
75 µs
75 µs
50 µs
50 µs
50 µs
50 µs
75 µs
75 µs
50 µs
50 µs
50 µs
50 µs
50 µs
50 µs
50 µs
50 µs
10k
Demo Board Default
Demo Board Default
Demo Board Default
Rev. 0.1 3/13
Copyright © 2016 by Silicon Laboratories
Si4825-DEMO