LTC6908HS6-2#TRMPBF

Programmable Timers And Oscillators Overview

The LTC6908HS6-2#TRMPBF is a spread spectrum silicon oscillator from Analog Devices, housed in a 6-pin TSOT-23 package. It provides two quadrature outputs (0°/90° phase shift) with CMOS or square wave signals. The frequency range spans 50kHz to 10MHz, programmed via a single external resistor (RSET). Key electrical parameters include a supply voltage of 2.7V to 5.5V, typical supply current of 400µA at 50kHz, and maximum frequency accuracy of ±4.5%. It features optional spread spectrum frequency modulation (SSFM) for improved EMC performance.

Programmable Timers And Oscillators Feature Summary

• Dual Output Configuration: Provides quadrature outputs (LTC6908-2 variant) shifted by 90 degrees.
• Spread Spectrum Modulation: Fixed ±10% frequency spreading using pseudorandom noise to reduce peak EMI.
• Resistor Programming: Frequency set by a single external resistor (RSET) ranging from 10kΩ to 2MΩ.
• Automotive Grade: Qualified under AEC-Q100 standards with an operating temperature range of -40°C to 125°C.

Programmable Timers And Oscillators Applications

• Switching power supply clock reference
• Portable and battery-powered equipment
• Precision programmable oscillator circuits
• Charge pump driver applications

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix #TRMPBF indicates a tape and reel mini-packaging format containing 500 pieces. Confirm the HS grade corresponds to the extended industrial temperature range (-40°C to 125°C) required for the target application environment. Ensure the ordering documentation matches the quadrature output variant (LTC6908-2) rather than the complementary version.

Programmable Timers And Oscillators Selection Notes

Select this component when quadrature clock signals are required for multi-phase regulator synchronization. The HS grade is necessary for high-temperature environments up to 125°C. Frequency accuracy varies with RSET value and supply voltage; ensure the chosen resistor keeps the frequency within the guaranteed error bounds specified in the electrical characteristics table.

Programmable Timers And Oscillators Part Context

This part belongs to the LTC6908 family of resistor-set oscillators. The 'HS' designation identifies the high-temperature automotive-grade version. The 'S6' indicates the 6-lead plastic TSOT-23 package. The '#2' suffix specifies the quadrature output configuration (90-degree phase shift), distinguishing it from the '-1' variant which offers complementary (180-degree) outputs.

Programmable Timers And Oscillators Replacement Considerations

Direct functional substitutes within the same package and specification profile are limited due to the specific SSFM and quadrature combination. Other variants in the LTC6908 series (e.g., CS6, IS6) offer similar functionality but differ in temperature range and automotive qualification status. Cross-referencing pin compatibility and output phase relationships is essential when considering alternative sources.