Rainbow-electronics MAX31D80 Uživatelský manuál stáhnout pdf (Strana 1)

_______________________________________________________________ Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,

or visit Maxim’s website at www.maxim-ic.com.

Spread-Spectrum Clock Generators

MAX31C80/MAX31D80

General Description

The MAX31C80/MAX31D80 are spread-spectrum clock

generators that contain a phase-locked loop (PLL)

that generates a 2MHz to 134MHz clock from an input

clock or crystal. The PLL can provide a spread-spec-

trum down-dithered (MAX31D80) or center-dithered

(MAX31C80) frequency-modulated clock. The devices

also buffer the incoming clock and provide this output

on a separate pin.

The MAX31C80/MAX31D80 are provided in a 10-pin

TDFN package and operate over a full -40NC to +125NC

automotive temperature range. Devices can be factory

programmed for multiple combinations of input and out-

put frequencies (see the Ordering Information table). A

low-cost, low-frequency crystal can be used at the input

to generate frequencies up to 134MHz.

Features

S 2MHz to 134MHz Spread-Spectrum Clock

Generator

S Input Can Be Either an 8MHz to 34MHz Crystal or

8MHz to 134MHz Clock

S Factory-Programmable Output Frequencies in

2MHz to 134MHz Range

S Low-Cost Crystal at Low Frequency Used to

Generate High Frequencies

S On-Board PLL is Capable of Spread-Spectrum

Frequency Modulation

S Down- or Center-Dither Spread-Spectrum

Frequency Modulation

S User-Configurable Spread-Spectrum Dither

Magnitude

S Low Cycle-to-Cycle Jitter

S 3.3V Supply Voltage

S Temperature Range: -40NC to +125NC

S Small Package: 10-Pin TDFN (3mm x 3mm x

0.8mm)

Applications

Graphics Cards

Set-Top Boxes

Automotive Infotainment

Printers

19-5214; Rev 0; 4/10

Typical Application Circuit

Ordering Information

xxx = Factory-programmable output frequency and dither rate (see the Selector Guide table).

+Denotes a lead(Pb)-free/RoHS-compliant package.

T = Tape and reel.

*EP = Exposed pad.

Selector Guide appears at end of data sheet.

MAX31D80

SMSEL1

SMSEL0

GND

XOUT 27MHz CLOCK

DECOUPLING

CAPACITOR

= 27MHz

CLKOUT

= 100MHz

1.5% DOWN DITHERED

PART TEMP RANGE DITHER MODE PIN-PACKAGE

MAX31C80T-xxx+

-40NC to +125NC

Center 10 TDFN-EP*

MAX31C80T-xxx+T

-40NC to +125NC

Center 10 TDFN-EP*

MAX31D80T-xxx+

-40NC to +125NC

Down 10 TDFN-EP*

MAX31D80T-xxx+T

-40NC to +125NC

Down 10 TDFN-EP*

1 2 3 4 5 6 7 8 9

MAX31C80/MAX31D80 1

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Strany 1 - MAX31C80/MAX31D80

_______________________________________________________________ Maxim Integrated Products 1For pricing, delivery, and ordering information, pleas

Strany 2

Spread-Spectrum Clock GeneratorsMAX31C80/MAX31D802 ______________________________________________________________________________________Stresses

Strany 3

Spread-Spectrum Clock GeneratorsMAX31C80/MAX31D80_______________________________________________________________________________________ 3DC ELECTR

Strany 4

Spread-Spectrum Clock GeneratorsMAX31C80/MAX31D804 ______________________________________________________________________________________

Strany 5

Spread-Spectrum Clock GeneratorsMAX31C80/MAX31D80_______________________________________________________________________________________ 5

Strany 6

Spread-Spectrum Clock GeneratorsMAX31C80/MAX31D806 ______________________________________________________________________________________

Strany 7

Spread-Spectrum Clock GeneratorsMAX31C80/MAX31D80_______________________________________________________________________________________ 7Figure 1.

Strany 8

Spread-Spectrum Clock GeneratorsMAX31C80/MAX31D808 ______________________________________________________________________________________Factory P

Strany 9

Spread-Spectrum Clock GeneratorsMAX31C80/MAX31D80Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in

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