DS1086L(2003) Просмотр технического описания (PDF) - Maxim Integrated

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DS1086L
(Rev.:2003)

3.3V Spread-Spectrum EconOscillator

Maxim Integrated 

Rev 0; 11/03

3.3V Spread-Spectrum EconOscillator

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

Ordering Information

PART

DS1086LU

TEMP RANGE

-40°C to +85°C

PIN-PACKAGE

8 µSOP (118 mil)

Typical Operating Circuit

DITHERED 130kHz TO

VCC

µP

66.6MHz OUTPUT

XTL1/OSC1

VCC OUT

SCL*

XTL2/OSC2 N.C.

SPRD DS1086L SDA*

VCC

PDN

GND

OE

DECOUPLING CAPACITORS

(0.1µF 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.

TOP VIEW

Pin Configuration

OUT 1

SPRD 2

VCC 3

GND 4

DS1086L

8 SCL

7 SDA

6 PDN

5 OE

µSOP

EconOscillator is a trademark of Dallas Semiconductor.

______________________________________________ Maxim Integrated Products 1

For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at

1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.

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