Overview

Features and Benefits

  • No External Components to Set Frequency
  • Frequency Error ±0.5% Typical
  • Fast Start-Up Time: 100µs Typical
  • ±20ppm/°C Temperature Stability
  • Includes Output Enable
  • Includes Divide by 1, 2 or 4
  • Rise Time: 0.5ns, CL = 5pF
  • Timing Jitter: <0.8% Typical
  • Duty Cycle: 50% ±2.5%
  • IS = 8mA Typical (fOSC = 100MHz, CL = 5pF)
  • CMOS Output Drives 600Ω Load
  • Single Supply 2.7V to 5.5V
  • Low Profile (1mm) ThinSOT Package

Product Details

The LTC6905-XXX series of parts are precision, fixed frequency, silicon oscillators designed to minimize board space while maximizing accuracy and ease of use.

Programmed at the factory to a fixed frequency, the LTC6905-XXX series of parts need no external trim components. An internal three-state divider allows for division of the master clock by 1, 2 or 4, providing 3 frequencies (for each device).

The LTC6905-XXX series operate with a single 2.7V to 5.5V power supply and provide a rail-to-rail, 50% duty cycle, square wave output. The OE pin will disable the output when brought low and synchronously enable the output when brought high, avoiding pulse slivers.

The four products of the LTC6905-XXX family are:

  • LTC6905-133: fOSC = 133MHz, 66.7MHz, 33.3MHz
  • LTC6905-100: fOSC = 100MHz, 50MHz, 25MHz
  • LTC6905-96: fOSC = 96MHz, 48MHz, 24MHz
  • LTC6905-80: fOSC = 80MHz, 40MHz, 20MHz

 

The LTC6905-XXX series of parts are designed with a factory trim option to modify the divider ratios from 1, 2, 4 to 8, 16, 32. A second trim option allows for additional master clock frequencies. For the alternate divider ratios and unlisted frequencies, contact LTC marketing.

Protected by U.S. Patents, including 6614313, 6342817.

Applications

  • Data Clocks for High Reliability Applications
  • High Vibration, High Acceleration Environments
  • Replacement for Fixed Crystal and Ceramic Oscillators

Product Categories

Product Lifecycle icon-recommended Production

At least one model within this product family is in production and available for purchase. The product is appropriate for new designs but newer alternatives may exist.

Evaluation Kits (7)

Tools & Simulations

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

LTspice

Models for the following parts are available in LTspice:

LTC6905
LTC6905-100
LTC6905-133
LTC6905-80
LTC6905-96

Design Tools

OscCalc Silicon Oscillator Selection & Synthesis Tool

OscCalc is a quick and easy tool to help you find the right silicon oscillator for your application.

Design Resources

ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.

Discussions

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The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


Price Table Help

 

Evaluation Boards Pricing displayed is based on 1-piece.
Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.