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DS1085L

Maxim Integrated Products
Part Number DS1085L
Manufacturer Maxim Integrated Products
Description 3.3V EconOscillator Frequency Synthesizer
Published Jul 21, 2007
Detailed Description www.maxim-ic.com FEATURES § User-Programmable Frequency Synthesizer § Programmable From 4.1kHz to 66MHz § Dual Synchrono...
Datasheet PDF File DS1085L PDF File

DS1085L
DS1085L

Overview
www.
maxim-ic.
com FEATURES § User-Programmable Frequency Synthesizer § Programmable From 4.
1kHz to 66MHz § Dual Synchronous Outputs § 4.
13MHz to 66MHz Reference Oscillator Output § 4.
1kHz to 66MHz Main Oscillator Output § Single 3.
0 to 3.
6V Supply § Three Resolution Options § 2-Wire Serial Interface § 0.
75% Absolute Accuracy § Nonvolatile (NV) Frequency Settings § No External Timing Components § Power-Down Mode ORDERING INFORMATION PIN ASSIGNMENT DEVICE PACKAGE DS1085LZ-5 DS1085LZ-12 DS1085LZ-25 150mil SO 150mil SO 150mil SO STEP SIZE 5kHz 12.
5kHz 25kHz DS1085L 3.
3V EconOscillator Frequency Synthesizer OUT1 OUT0 VCC GND 18 27 36 45 SO (150mil) SCL SDA CTRL1 CTRL0 PIN DESCRIPTION OUT1 - Main Oscillator Output OUT0 - Reference Oscillator Output VCC GND - Power-Supply Voltage - Ground CTRL1 - Control Pin for OUT1 CTRL0 - Control Pin for OUT0 SDA - 2-Wire Serial Data Input/Output SCL - 2-Wire Serial Clock OSCILLATOR OUTPUT RANGE 4.
1kHz to 66MHz 4.
1kHz to 66MHz 4.
1kHz to 66MHz DESCRIPTION The DS1085L is a dual-output frequency synthesizer requiring no external timing components for operation.
It can be used as a standalone oscillator or as a dynamically programmed, processor-controlled peripheral device.
An internal master oscillator can be programmed from 33MHz to 66MHz with three resolution options of 5kHz, 12.
5kHz, and 25kHz.
A programmable 3-bit prescaler (divide-by-1, 2, 4, or 8) permits the generation of a reference oscillator output (OUT0) from the master, ranging from 4.
13MHz to 66MHz.
A second independent prescaler and a 1-to-1025 divider allow the generation of a main oscillator output (OUT1) from 4.
1kHz to 66MHz.
The two outputs, although synchronous with the master, can be independently programmed.
The combination of programmable master oscillator, prescalers, and dividers allows the generation of thousands of user-specified frequencies.
All master oscillator, prescaler, and divider settings are stored in NV (EEPROM) memory, providing a ...


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