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DS1080CL

Spread-Spectrum Crystal Multiplier

Maxim Integrated 

19-6068; Rev 1; 10/11

Spread-Spectrum Crystal Multiplier

General Description

The DS1080CL is a low-jitter, crystal-based clock gen-

erator with an integrated phase-locked loop (PLL) to

generate spread-spectrum clock outputs from 8MHz to

64MHz. The device is pin programmable to select the

clock multiplier rate as well as the dither magnitude.

The DS1080CL has a spread-spectrum disable mode

and a power-down mode to conserve power.

Automotive

Cable Modems

Cell Phones

Computer Peripherals

Applications

Copiers

Infotainment

PCs

Printers

Pin Configuration

TOP VIEW

+

X1 1

GND 2

CMSEL 3

DS1080CL

SMSEL 4

8 X2

7 VCC

6 SSO

5 PDN

Features

♦ Generates Spread-Spectrum Clocks from 8MHz to

64MHz

♦ Selectable Clock Multiplier Rates of 1x, 2x, and 4x

♦ Center Spread-Spectrum Dithering

♦ Selectable Spread-Spectrum Modulation

Magnitudes of ±0.5%, ±1.0%, and ±1.5%

♦ Spread-Spectrum Disable Mode

♦ Low Cycle-to-Cycle Jitter

♦ Power-Down Mode with High-Impedance Output

♦ Low-Power Consumption

♦ 3.0V to 3.6V Single-Supply Operation

♦ -40°C to +125°C Temperature Operation

♦ Small 8-Pin µSOP Package

Ordering Information

PART

TEMP RANGE

DS1080CLU+

-40°C to +125°C

DS1080CLU+T

-40°C to +125°C

DS1080CLU/V+

-40°C to +125°C

DS1080CLU/V+T -40°C to +125°C

+Denotes a lead-free package.

/V denotes an automotive qualified part.

T = Tape and reel.

PIN-PACKAGE

8 μSOP

8 μSOP

8 μSOP

8 μSOP

Typical Operating Circuit

CRYSTAL

CL1

CL2

X1

1

GND

2

CMSEL

3

SMSEL

4

DS1080CL

X2

8

7 VCC

SSO

6

PDN

5

VCC

DECOUPLING

CAPACITOR

fSSO

VCC

NOTE: IN THE ABOVE CONFIGURATION WITH PDN CONNECTED TO VCC, SMSEL CONNECTED TO GND, AND CMSEL OPEN, THE DEVICE IS IN NORMAL

OPERATION WITH 2x CLOCK MULTIPLICATION AND A SPREAD-SPECTRUM MAGNITUDE OF ±0.5%.

________________________________________________________________ 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.

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