DS1086
DS1086 is Spread-Spectrum EconOscillator manufactured by Maxim Integrated.
Description
The DS1086 Econ Oscillator™ is a programmable clock generator that produces a spread-spectrum (dithered) square-wave output of frequencies from 260k Hz to 133MHz. The selectable dithered output reduces radiated-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 puter Peripherals
Cell Phones
Cable Modems
Features o User-Programmable Square-Wave Generator o Frequencies Programmable from 260k Hz 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 ponents Required o Power-Down Mode o 10k Hz 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/Ro HS-pliant package.
Typical Operating Circuit
Pin Configuration
MICROPROCESSOR
DITHERED 260k Hz TO 133MHz OUTPUT
XTL1/OSC1
VCC OUT
XTL2/OSC2 N.C.
SPRD
SCL- SDA- PDN
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.
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