MB88154A Просмотр технического описания (PDF) - Cypress Semiconductor

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Компоненты Описание

производитель

MB88154A

Spread Spectrum Clock Generator

Cypress Semiconductor 

6. Block Diagram

VDD

MB88154A

SEL1 8

SEL0 6

XOUT

5

Modulation rate

setting

Reference

clock

4

XIN

Rf = 1 MΩ

2

PLL block

Modulation

clock output

1 CKOUT

Reference clock output

7 REFOUT

3

VSS

Reference

clock

1

−

M

Phase

compare

Charge

pump

V/I

conversion

IDAC

1

−

Loop filter

N

ICO

Modulation

Clock

output

1

−

L

Modulation

logic

Modulation

rate setting/

Modulation

enable setting

MB88154A PLL block

A glitchless IDAC (current output D/A converter) provides precise modulation, thereby dramatically reducing

EMI.

Document Number: 002-08252 Rev. *B

Page 6 of 23

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