Rev 0; 11/03
3.3V Spread-Spectrum EconOscillator
General Description
The DS1086L EconOscillator鈩?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.
Features
鈾?/div>
User-Programmable Square-Wave Generator
鈾?/div>
Frequencies Programmable from 130kHz to
66.6MHz
鈾?/div>
0.5%, 1%, 2%, 4%, or 8% Selectable Dithered
Output
鈾?/div>
Adjustable Dither Rate
鈾?/div>
Glitchless Output-Enable Control
鈾?/div>
2-Wire Serial Interface
鈾?/div>
Nonvolatile Settings
鈾?/div>
2.7V to 3.6V Supply
鈾?/div>
No External Timing Components Required
鈾?/div>
Power-Down Mode
鈾?/div>
5kHz Master Frequency Step Size
鈾?/div>
EMI Reduction
鈾?/div>
Industrial Temperature Range: -40擄C to +85擄C
DS1086L
Applications
Printers
Copiers
PCs
Computer Peripherals
Cell Phones
Cable Modems
Ordering Information
PART
DS1086LU
TEMP RANGE
-40擄C to +85擄C
PIN-PACKAGE
8
碌SOP
(118 mil)
Typical Operating Circuit
DITHERED 130kHz TO
66.6MHz OUTPUT
V
CC
N.C.
OUT
SPRD
V
CC
GND
DECOUPLING CAPACITORS
(0.1碌F and 0.01碌F)
*SDA AND SCL CAN BE CONNECTED DIRECTLY HIGH IF THE DS1086L NEVER NEEDS
TO BE PROGRAMMED IN-CIRCUIT, INCLUDING DURING PRODUCTION TESTING.
SCL*
V
CC
Pin Configuration
TOP VIEW
碌P
XTL1/OSC1
XTL2/OSC2
OUT
1
SPRD
V
CC
2
8
7
SCL
SDA
PDN
OE
DS1086L
SDA*
PDN
OE
DS1086L
3
6
5
GND
4
碌SOP
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鈥檚 website at www.maxim-ic.com.
next
DS1086LU 產(chǎn)品屬性
Lead (SnPb) Finish for COTSObsolescence Mitigation Program
50
集成電路 (IC)
時鐘/計時 - 時鐘發(fā)生器,PLL,頻率合成器
EconOscillator™
擴展頻譜時鐘發(fā)生器
無
時鐘
時鐘
1
2:1
無/無
48.75MHz
是/無
2.7 V ~ 3.6 V
-40°C ~ 85°C
表面貼裝
8-TSSOP,8-MSOP(0.118",3.00mm 寬)
8-uMAX
管件
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