DS1086L Datasheet, PDF (1/16 Pages) Maxim Integrated Products – 3.3V Spread-Spectrum EconOscillator

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
V_CC
µP
66.6MHz OUTPUT
XTL1/OSC1
V_CC ^OUT
SCL*
XTL2/OSC2 N.C.
SPRD _DS1086L SDA*
V_CC
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
V_CC 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.