General Description

The DS1086L EconOscillator™ is a 3.3V programmable

clock generator that produces a spread-spectrum

(dithered) square-wave output of frequencies from

130kHz to 66.6MHz. The selectable dithered output

reduces radiated-emission peaks by dithering the fre-

quency 0.5%,1%, 2%, 4%, or 8% below the pro-

grammed frequency. The DS1086L has a power-down

mode and an output-enable control for power-sensitive

applications. All the device settings are stored in non-

volatile (NV) EEPROM memory allowing it to operate in

stand-alone applications.

Applications

Printers

Copiers

PCs

Computer Peripherals

Cell Phones

Cable Modems

Features

♦ User-Programmable Square-Wave Generator

♦ Frequencies Programmable from 130kHz to

66.6MHz

♦ 0.5%, 1%, 2%, 4%, or 8% Selectable Dithered

Output

♦ Adjustable Dither Rate

♦ Glitchless Output-Enable Control

♦ 2-Wire Serial Interface

♦ Nonvolatile Settings

♦ 2.7V to 3.6V Supply

♦ No External Timing Components Required

♦ Power-Down Mode

♦ 5kHz Master Frequency Step Size

♦ EMI Reduction

♦ Industrial Temperature Range: -40°C to +85°C

3.3V Spread-Spectrum EconOscillator

PDN

OE

GND

1

2

8

7

SCL

SDA

SPRD

OUT

μSOP

TOP VIEW

3

4

6

5

DS1086L

Pin Configuration

Ordering Information

XTL1/OSC1

μP

XTL2/OSC2

DITHERED 130kHz TO

66.6MHz OUTPUT

DECOUPLING CAPACITORS

(0.1

μF and 0.01μF)

*SDA AND SCL CAN BE CONNECTED DIRECTLY HIGH IF THE DS1086L NEVER NEEDS

TO BE PROGRAMMED IN-CIRCUIT, INCLUDING DURING PRODUCTION TESTING.

SPRD

OUT

GND

N.C.

SCL*

SDA*

PDN

OE

DS1086L

Typical Operating Circuit

Rev 1; 9/07

PART

TEMP RANGE

PIN-PACKAGE

DS1086LU

-40°C to +85°C

8

μSOP (118 mil)

EconOscillator is a trademark of Dallas Semiconductor.

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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.