LTC6908IS6-2#TRMPBF

Programmable Timers And Oscillators Overview

The LTC6908IS6-2#TRMPBF is a precision silicon oscillator from Analog Devices, housed in a 6-lead TSOT-23 package. It provides two quadrature outputs (0°/90° phase shift) with rail-to-rail CMOS square wave signals. The frequency is set by a single external resistor (RSET), covering a range of 50kHz to 10MHz at a 5V supply. Key electrical parameters include a typical supply current of 400µA at 50kHz and 5V, maximum frequency accuracy of ±1.5% at 25°C, and temperature stability of ±40ppm/°C. It supports optional spread spectrum frequency modulation (SSFM) for improved EMC performance.

Programmable Timers And Oscillators Feature Summary

• Dual Quadrature Outputs: Provides OUT1 and OUT2 shifted by 90 degrees, suitable for multi-phase switching regulator control.
• Spread Spectrum Modulation: SSFM capability reduces peak electromagnetic radiation with fixed ±10% spreading and selectable rates (fOUT/16, fOUT/32, fOUT/64).
• Single Resistor Programming: Frequency is determined by one external resistor using the formula fOUT = 10MHz • 10k/RSET.
• Low Power Consumption: Typical supply current is 400µA at V+ = 5V and 50kHz output.

Programmable Timers And Oscillators Applications

• Switching power supply clock references
• Portable and battery-powered equipment
• Precise programmable oscillators
• Charge pump drivers

Programmable Timers And Oscillators Procurement Notes

Verify the #TRMPBF suffix indicates a mini tape and reel packaging containing 500 pieces. Confirm the IS6 designation corresponds to the industrial temperature range of –40°C to 85°C. Ensure the specific lot date code meets project requirements as manufacturing dates vary. Check for automotive-grade alternatives if AEC-Q100 qualification is required for the application.

Programmable Timers And Oscillators Selection Notes

Select the LTC6908IS6-2 variant specifically for quadrature (90-degree) output phase relationships; use the -1 version for complementary (180-degree) outputs. Choose the IS6 package for industrial temperature operation (-40°C to 85°C); use HS6 for extended high-temperature applications up to 125°C. Ensure the RSET resistor value falls within the optimal 20kΩ to 400kΩ range for best accuracy and stability.

Programmable Timers And Oscillators Part Context

This component belongs to the LTC6908 family of resistor-set silicon oscillators. The -2 suffix denotes the quadrature output configuration, distinguishing it from the -1 complementary output version. The IS6 package identifies the industrial grade TSOT-23 form factor. It serves as a low-cost, low-power alternative to crystal oscillators where moderate accuracy and spread spectrum features are beneficial.

Programmable Timers And Oscillators Replacement Considerations

Publicly confirmed direct substitutes include other members of the LTC6908 family such as the LTC6908CS6-2#TRMPBF (commercial grade) or LTC6908HS6-2#TRMPBF (high-temperature grade), provided the temperature range requirements are met. Cross-family replacements require verification of pin compatibility and electrical specifications.