LTC6905IS5-100#TRPBF

Programmable Timers And Oscillators Overview

The LTC6905IS5-100#TRPBF is a precision, fixed-frequency silicon oscillator from Analog Devices Inc., housed in a 5-lead ThinSOT (TSOT-23) package. It operates on a single supply voltage ranging from 2.7V to 5.5V and delivers a rail-to-rail CMOS output with a typical duty cycle of 50%. The device is factory-programmed for a master oscillation frequency of 100MHz, providing selectable output frequencies of 100MHz, 50MHz, or 25MHz via the DIV pin. Key electrical characteristics include a typical frequency accuracy of ±0.5% at 25°C, temperature stability of ±20ppm/°C, and a typical start-up time of 100µs.

Programmable Timers And Oscillators Feature Summary

• Factory-trimmed fixed frequency of 100MHz with selectable division ratios of ÷1, ÷2, or ÷4
• High frequency accuracy: ±0.5% typical at 25°C; ±2.9% maximum over -40°C to 85°C
• Low timing jitter (<0.8% typical) and fast start-up time (100µs typical)
• Integrated Output Enable (OE) pin for synchronous enable/disable without pulse slivers

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 where board space is limited

Programmable Timers And Oscillators Procurement Notes

Verify that the ordering suffix #TRPBF confirms the component is supplied in tape and reel packaging and is lead-free compliant. Confirm the 'I' grade designation corresponds to the specified industrial temperature range of -40°C to 85°C. Ensure the specific part number matches the required 100MHz master frequency variant within the LTC6905 family.

Programmable Timers And Oscillators Selection Notes

Select this model when a fixed 100MHz source is required without external trimming components. The IS5 suffix indicates the Industrial temperature grade (-40°C to 85°C); use CS5 for commercial (0°C to 70°C) or HS5 for extended (-40°C to 125°C) ranges. Consider the power supply current consumption, which varies between 8mA and 12mA depending on the selected divide ratio and supply voltage.

Programmable Timers And Oscillators Part Context

This component belongs to the LTC6905-XXX series of fixed-frequency silicon oscillators. Other variants in the series include the LTC6905-133 (133MHz), LTC6905-96 (96MHz), and LTC6905-80 (80MHz). All share the same TSOT-23 package footprint and functional interface, differing primarily in their factory-set master frequencies.

Programmable Timers And Oscillators Replacement Considerations

Direct replacements within the same family include LTC6905CS5-100#TRPBF (Commercial temp) and LTC6905HS5-100#TRPBF (Extended temp). For different frequencies, consider LTC6905IS5-133#TRPBF or LTC6905IS5-80#TRPBF. Note that resistor-set programmable oscillators like the LTC6905 require external components and are not direct pin-compatible substitutes for fixed-frequency parts.