MB88151A 查看數據表（PDF） - Fujitsu

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MB88151A

Spread Spectrum Clock Generator

Fujitsu 

MB88151A

■ SPECTRUM EXAMPLE CHARACTERISTICS

The condition of the examples of the characteristic is shown as follows : Input frequency = 20 MHz (Output

frequency = 20 MHz : Using MB88151A-100 (Multiply-by-1)), Power - supply voltage = 3.3 V, None load capacity,

Modulation rate = ± 1.5% (center spread).

Spectrum analyzer HP4396B is connected with CKOUT. The result of the measurement with RBW = 1 kHz

(ATT use for − 6dB).

CH B Spectrum

Avg

4

10 dB /REF 0 dBm

No modulation

−6.54 dBm

±1.5% modulation

−24.45 dBm

RBW# 1 kHZ VBW 1 kHZ

CENTER 20 MHZ

ATT 6 dB

SWP 2.505 s

SPAN 4 MHZ

19

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