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.
Features
♦
User-Programmable Square-Wave Generator
♦
Frequencies Programmable from 260kHz to
133MHz
♦
2% or 4% Selectable Dithered Output
♦
Glitchless Output-Enable Control
♦
2-Wire Serial Interface
♦
Nonvolatile Settings
♦
5V Supply
♦
No External Timing Components Required
♦
Power-Down Mode
♦
10kHz Master Frequency Step Size
♦
EMI Reduction
DS1086
Applications
Printers
Copiers
PCs
Computer Peripherals
Cell Phones
Cable Modems
Ordering Information
PART
DS1086U*
DS1086Z
TEMP RANGE
0°C to +70°C
0°C to +70°C
PIN-PACKAGE
8 μSOP
8 SO
*Future
Product
Typical Operating Circuit
DITHERED 260kHz TO
133MHz OUTPUT
V
CC
N.C.
OUT
SPRD
V
CC
GND
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.
SCL*
V
CC
Pin Configuration
TOP VIEW
MICRO-
PROCESSOR
XTL1/OSC1
XTL2/OSC2
OUT
1
SPRD
V
CC
2
8
7
SCL
SDA
PDN
OE
DS1086
SDA*
PDN
OE
DS1086
3
6
5
GND
4
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.
Spread-Spectrum EconOscillator
DS1086
ABSOLUTE MAXIMUM RATINGS
Voltage on V
CC
Relative to Ground ......................-0.5V to +6.0V
Voltage on SPRD,
PDN,
OE, SDA,
SCL Relative to Ground (See Note 1).......-0.5 to (V
CC
+ 0.5V)
Note 1:
This voltage must not exceed 6.0V.
Operating Temperature Range...............................0°C to +70°C
Storage Temperature Range .............................-55°C to +125°C
Soldering Temperature ..................See IPC/JEDEC J-STD-020A
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
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