LTC6905CS5-100#TRPBF

Programmable Timers And Oscillators Overview

The LTC6905CS5-100#TRPBF is a fixed frequency silicon oscillator from Analog Devices, operating at a master clock of 100MHz. It provides three selectable output frequencies (100MHz, 50MHz, and 25MHz) via an internal three-state divider controlled by the DIV pin. The device features a typical frequency accuracy of ±0.5% and a temperature stability of ±20ppm/°C. It operates on a single supply voltage ranging from 2.7V to 5.5V with a typical supply current of 8mA at 3.6V. The output is CMOS, capable of driving a 600Ω load, with a typical rise time of 0.5ns and timing jitter under 0.8%. It is housed in a low-profile 1mm ThinSOT SOT-23-5 package.

Programmable Timers And Oscillators Feature Summary

• Factory-programmed fixed frequency of 100MHz with no external trim components required.
• Internal three-state divider allows selection of ÷1, ÷2, or ÷4 ratios for flexible frequency options.
• High precision with ±0.5% typical frequency accuracy and ±20ppm/°C temperature coefficient.
• Fast start-up time of typically 100µs and synchronous output enable/disable functionality.

Programmable Timers And Oscillators Applications

• Data clocks for high reliability applications
• Clock sources in high vibration and high acceleration environments
• Replacement for fixed crystal and ceramic oscillators

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging and lead-free compliance. Confirm the 'C' grade designation corresponds to the specified commercial temperature range of 0°C to 70°C for guaranteed performance. Ensure the ordering part number matches the exact frequency variant required, as the base model supports multiple frequencies.

Programmable Timers And Oscillators Selection Notes

Select this component when board space minimization is critical due to its SOT-23-5 package. Choose the LTC6905CS5-100 specifically for a 100MHz master clock requirement. Consider the power supply noise sensitivity; ensure clean power delivery to avoid jitter increases or frequency errors related to the master oscillator control loop frequency. Verify that the load requirements do not exceed the drive capability without buffering.

Programmable Timers And Oscillators Part Context

This part belongs to the LTC6905-XXX series of precision fixed frequency silicon oscillators. Other variants in the family include the -133 (133MHz), -96 (96MHz), and -80 (80MHz) models. The series is designed to replace traditional discrete oscillators while offering similar accuracy in a significantly smaller footprint.

Programmable Timers And Oscillators Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. For alternate divider ratios or unlisted frequencies, contact Analog Devices marketing directly.