LTC6905CS5-133#TRPBF

Programmable Timers And Oscillators Overview

The LTC6905CS5-133#TRPBF is a fixed frequency silicon oscillator from Analog Devices, operating at a master clock of 133MHz. It provides three selectable output frequencies: 133MHz (÷1), 66.7MHz (÷2), and 33.3MHz (÷4). The device features ±0.5% typical frequency accuracy at 25°C and ±20ppm/°C temperature stability. It operates on a single 2.7V to 5.5V supply with a typical current draw of 10mA at 133MHz. Packaged in a low-profile 1mm ThinSOT-5 (SOT-23-5) housing, it includes an output enable pin and requires no external components for frequency setting.

Programmable Timers And Oscillators Feature Summary

• Factory-programmed fixed frequency of 133MHz with internal divide-by-1, 2, or 4 options
• High precision: ±0.5% typical frequency error at 25°C; ±20ppm/°C temperature coefficient
• Fast start-up time of 100µs typical; CMOS output drives up to 600Ω load
• Single-supply operation (2.7V to 5.5V); Output Enable pin prevents 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 the suffix #TRPBF indicates tape and reel packaging with lead-free compliance. Confirm the 'C' grade designation corresponds to the specified commercial temperature range of 0°C to 70°C for guaranteed performance metrics. Ensure the ordering part number matches the specific 133MHz variant within the LTC6905 family.

Programmable Timers And Oscillators Selection Notes

Select the LTC6905CS5-133 when a precise 133MHz base frequency is required. Use the DIV pin configuration to access derived frequencies of 66.7MHz or 33.3MHz. Choose the 'C' grade for commercial temperature ranges (0°C to 70°C); select 'I' grade (-40°C to 85°C) if extended temperature coverage is needed. Ensure power supply noise is minimized to maintain jitter specifications below 0.8%.

Programmable Timers And Oscillators Part Context

This component belongs to the LTC6905-XXX series of precision, fixed frequency silicon oscillators. The series includes variants for 133MHz, 100MHz, 96MHz, and 80MHz master clocks. All parts share the same SOT-23-5 package and functional architecture, differing primarily in their factory-trimmed oscillation frequency and associated power consumption characteristics.

Programmable Timers And Oscillators Replacement Considerations

Direct replacements include other members of the LTC6905 family such as LTC6905IS5-133#TRPBF for extended temperature range. For lower frequency needs, consider LTC6905CS5-100#TRPBF (100MHz) or LTC6905CS5-96#TRPBF (96MHz). Alternative technologies like the LTC6900 or LTC6906 offer different frequency ranges or power profiles but require resistor-based programming rather than fixed factory settings.