MB88155 Просмотр технического описания (PDF) - Fujitsu

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MB88155

Spread Spectrum Clock Generator

Fujitsu 

MB88155

■ SPECTRUM EXAMPLE CHARACTERISTICS

The condition of the examples of the characteristic is shown as follows : Input frequency = 16 MHz (Output

frequency = 64 MHz : Using MB88155-410 (Multiplied by 4) )

Power-supply voltage = 3.3 V, None load capacity. Modulation rate = ± 1.0% (center spread).

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

use for −6 dB) .

CH B Spectrum

Avg

4

10 dB /REF 0 dBm

No modulation

−5.64 dBm

±1.0% modulation

−26.93 dBm

RBW# 1 kHZ VBW 1 kHZ

CENTER 64 MHZ

ATT 6 dB

SWP 8.005 s

SPAN 12.8 MHZ

20

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