DS1083LR-U+ Maxim Integrated Products, DS1083LR-U+ Datasheet

DS1083LR-U+

Manufacturer Part Number

DS1083LR-U+

Description

Timers & Support Products IC CLOCK MOD SS 3.3V ad-Spectrum Clock Mo

Manufacturer

Maxim Integrated Products

Datasheet

1.DS1083LRT.pdf (5 pages)

Specifications of DS1083LR-U+

Lead Free Status / RoHS Status

Lead free / RoHS Compliant

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Download datasheet (157Kb)

The DS1083L is a spread-spectrum clock modulator IC

that reduces EMI in high-clock, frequency-based, digi-

tal electronic equipment.

Using an integrated phase-locked loop (PLL), the

DS1083L accepts an input clock signal in the range of

16MHz to 134MHz and delivers a spread-spectrum

modulated output clock signal. The PLL modulates, or

dithers, the output clock about the center input frequen-

cy at a pin-selectable magnitude. The DS1083L auto-

matically adjusts the dither rate based on the input

clock frequency to maximize the EMI reduction.

By dithering the system clock, all the address, data,

and timing signals generated from this signal are also

dithered so that the measured EMI at the fundamental

and harmonic frequencies is greatly reduced. This is

accomplished without changing clock rise/fall times or

adding the space, weight, design time, and cost asso-

ciated with mechanical shielding.

The DS1083L is provided in a low-cost, space-saving,

6-lead thin SOT23 package and operates over a full

automotive temperature range of -40°C to +125°C.

Pin Configuration and Typical Operating Circuit appear at

end of data sheet.

Rev 0; 5/07

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.

LCD Panels for TVs, Desktop Monitors, Notebook

and Tablet PCs

Automotive Telematics and Infotainment

Printers

134MHz

________________________________________________________________ Maxim Integrated Products

= 16MHz TO

SMSEL1

SMSEL2

CLKIN

General Description

16MHz to 134MHz Spread-Spectrum

Applications

Clock Modulator for LCD Panels

CLOCK RATE

DETECT

DS1083L

♦ Modulates a 16MHz to 134MHz Clock with Center

♦ Selectable Spread-Spectrum Modulation

♦ Low 75ps Cycle-to-Cycle Jitter

♦ Automatic Dither Cycle Rate Adjustment to

♦ Low Cost

♦ Low Power Consumption

♦ 3.3V Single Voltage Supply

♦ -40°C to +125°C Operating Temperature Range

♦ Small 6-Lead Thin SOT23 Package

+ Denotes a lead-free package.

T = Tape and reel.

DS1083LR+T

PLL WITH CENTER-

CONFIGURATION

Spread-Spectrum Dithering

Magnitudes of:

Maximize EMI Reduction

DECODE AND

CONTROL

DITHERING

±0.5%

±1%

±1.5%

±2%

PART

SPREAD

-40°C to +125°C

TEMP RANGE

Ordering Information

SSO

134MHz (DITHERED)

VCC

GND

SSO

= 16MHz to

Block Diagram

PIN-PACKAGE

6 Thin SOT23

Features

Related parts for DS1083LR-U+

DS1083LR-U+ Summary of contents

Page 1

... Low Cost ♦ Low Power Consumption ♦ 3.3V Single Voltage Supply ♦ -40°C to +125°C Operating Temperature Range ♦ Small 6-Lead Thin SOT23 Package Applications PART DS1083LR+T + Denotes a lead-free package Tape and reel. DS1083L PLL WITH CENTER- SPREAD DITHERING CLOCK RATE ...

Page 2

Spread-Spectrum Clock Modulator for LCD Panels ABSOLUTE MAXIMUM RATINGS Voltage Range on VCC Relative to GND.............-0.5V to +3.63V Voltage Range on Any Lead Relative to GND ................-0. 0.5V), not to exceed +3.63V CC Operating ...

Page 3

Spread-Spectrum (T = +25°C, unless otherwise noted.) A SUPPLY CURRENT vs. SUPPLY VOLTAGE 12 CLKIN = 134MHz 10 CLKIN = 66MHz 8 CLKIN = 16MHz 3.0 3.1 3.2 3.3 3.4 3.5 SUPPLY VOLTAGE ...

Page 4

Spread-Spectrum Clock Modulator for LCD Panels PIN NAME 1 Clock Input. 16MHz to 134MHz clock input (f CLKIN 2 GND Ground 3 Spread-Spectrum Clock Output. Outputs a center-dithered spread-spectrum version of the clock input at SSO CLKIN. ...

Page 5

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 5 © 2007 Maxim Integrated Products ...

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