MB88154A Просмотр технического описания (PDF) - Cypress Semiconductor

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MB88154A

Spread Spectrum Clock Generator

Cypress Semiconductor 

MB88154A

19. Example Characteristics

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

Using MB88154A-113), 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

−6.18 dBm

modulation ± 1.5 %

−26.03 dBm

RBW# 1 kHZ VBW 1 kHZ

CENTER 20 MHZ

ATT 6 dB

SWP 2.505 s

SPAN 4 MHZ

Document Number: 002-08252 Rev. *B

Page 19 of 23

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