General Description

The DS1087L is a clock generator that produces a spread-spectrum (dithered) square-wave output of frequencies from 130kHz to 66.6MHz. The DS1087L is shipped from the factory programmed at a specific frequency and spread-spectrum percentage. The user still has access to an internal frequency divider, selectable 2 or 4 dithered output, and programmable output power-down/disable mode through a 2-wire programming interface. All the device settings are stored in nonvolatile (NV) EEPROM allowing it to operate in stand-alone applications. The DS1087L has powerdown and output-enable control pins for power-sensitive applications.

特性 Features

? Factory Programmed Square-Wave Generator from 130kHz to 66.6MHz

? No External Timing Components Required

? EMI Reduction

? 2.7V to 3.6V Supply

? User Programmable Down to 130kHz with Divider (Dependent on Master Oscillator Frequency)

? 2 or 4 Selectable Dithered Output

? Glitchless Output-Enable Control

? 2-Wire Serial Interface

? Nonvolatile Settings

? Power-Down Mode

? Programmable Output Power-Down/Disable Mode

Applications

Printers

Copiers

PCs

Computer Peripherals

Cell Phones

Cable Modems