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Maxim Integrated - Spread-Spectrum EconOscillator

Numéro de référence DS1086
Description Spread-Spectrum EconOscillator
Fabricant Maxim Integrated 
Logo Maxim Integrated 





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DS1086 fiche technique
19-6224; Rev 2; 3/12
Spread-Spectrum EconOscillator
General Description
The DS1086 EconOscillator™ is a programmable clock
generator that produces a spread-spectrum (dithered)
square-wave output of frequencies from 260kHz to
133MHz. The selectable dithered output reduces radi-
ated-emission peaks by dithering the frequency 2% or
4% below the programmed frequency. The DS1086 has
a power-down mode and an output-enable control for
power-sensitive applications. All the device settings are
stored in nonvolatile (NV) EEPROM memory allowing it
to operate in stand-alone applications.
Applications
Printers
Copiers
PCs
Computer Peripherals
Cell Phones
Cable Modems
Features
o User-Programmable Square-Wave Generator
o Frequencies Programmable from 260kHz to
133MHz
o 2% or 4% Selectable Dithered Output
o Glitchless Output-Enable Control
o 2-Wire Serial Interface
o Nonvolatile Settings
o 5V Supply
o No External Timing Components Required
o Power-Down Mode
o 10kHz Master Frequency Step Size
o EMI Reduction
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
DS1086U
0°C to +70°C
8 µSOP
DS1086U+
0°C to +70°C
8 µSOP
DS1086Z
0°C to +70°C
8 SO
DS1086Z+
0°C to +70°C
8 SO
Note: Contact the factory for custom settings.
+Denotes a lead(Pb)-free/RoHS-compliant package.
Typical Operating Circuit
Pin Configuration
MICRO-
PROCESSOR
DITHERED 260kHz TO
133MHz OUTPUT
XTL1/OSC1
VCC OUT
XTL2/OSC2 N.C.
SPRD
VCC
GND
DS1086
VCC
SCL*
SDA*
PDN
OE
DECOUPLING CAPACITORS
(0.1µF and 0.01µF)
*SDA AND SCL CAN BE CONNECTED DIRECTLY HIGH IF THE DS1086 NEVER NEEDS
TO BE PROGRAMMED IN-CIRCUIT, INCLUDING DURING PRODUCTION TESTING.
TOP VIEW
OUT 1
SPRD 2
VCC 3
GND 4
DS1086
8 SCL
7 SDA
6 PDN
5 OE
µSOP/SO
EconOscillator is a trademark of Maxim Integrated Products, Inc.
________________________________________________________________ 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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