SI4835-B30_ データシートの表示（PDF） - Silicon Laboratories

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SI4835-B30_

Si483X-B/Si4820/24 ANTENNA, SCHEMATIC, LAYOUT, AND DESIGN GUIDELINES

Silicon Laboratories 

AN555

2.2.3. Typical 2-band application for US

Table 5 and Figure 3 show the band and resistor value details for a typical 2-band application for the U.S.

Table 5. Typical U.S. 2-Band Selection

Band

Number

Band4

Band21

Band

Name

FM1

AM1

Band Frequency

Range

87–108 MHz

520–1710 kHz

De-emphasis

75 µs

Stereo LED on

Threshold

(Only for Si483x-B)

Separation = 12 dB,

RSSI = 28

Total R to GND

(k, 1%)

77

247

Figure 3. Typical 2-Band Selection Circuit for US

8

Rev. 0.2

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