LTC6908CDCB-2#TRMPBF

Programmable Timers And Oscillators Overview

The LTC6908CDCB-2#TRMPBF is a silicon oscillator from Analog Devices, featuring two quadrature outputs (0°/90° phase shift). It operates on a single 2.7V to 5.5V supply and generates frequencies from 50kHz to 10MHz via a single external resistor (RSET). The device includes spread spectrum frequency modulation (SSFM) with ±10% spreading for EMC improvement. Key electrical parameters include a typical supply current of 400µA at 5V/50kHz, frequency accuracy within ±1.5% max at 25°C, and ±40ppm/°C temperature stability. It is housed in a 6-lead DFN package.

Programmable Timers And Oscillators Feature Summary

• Quadrature Outputs: Provides two outputs shifted by 90 degrees.
• Spread Spectrum Modulation: Fixed ±10% frequency spreading with selectable rates (fOUT/16, fOUT/32, fOUT/64).
• Single Resistor Programming: Frequency set by one resistor using the formula fOUT = 10MHz • 10k/RSET.
• Low Power Consumption: Typical supply current of 400µA at 5V.

Programmable Timers And Oscillators Applications

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

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix #TRMPBF indicates a Tape and Reel (Mini) packaging format containing 500 pieces. Confirm the CDCB designation corresponds to the commercial temperature grade (0°C to 70°C specified performance range) and DFN package type. Ensure compatibility with automotive requirements if applicable, as this specific part number does not carry the #W automotive suffix.

Programmable Timers And Oscillators Selection Notes

Select the LTC6908CDCB-2 variant when a 90-degree phase shift between outputs is required for multi-phase regulator control. Choose the CDCB temperature grade for applications operating between 0°C and 70°C. For wider temperature ranges (-40°C to 85°C), consider the IDCB variant. Ensure RSET values are between 20kΩ and 400kΩ for optimal accuracy.

Programmable Timers And Oscillators Part Context

This component belongs to the LTC6908 family of resistor-set oscillators. The '2' suffix denotes the quadrature output version (LTC6908-2), distinct from the complementary output LTC6908-1. The DCB package is a 6-lead, 2mm x 3mm plastic DFN. It is designed to replace discrete crystal oscillators or PLL-based solutions in space-constrained designs.

Programmable Timers And Oscillators Replacement Considerations

Publicly confirmed substitute part numbers are not provided in the source material. When replacing, ensure the new component supports quadrature outputs if the LTC6908-2 topology is critical. Verify that the replacement oscillator matches the 2.7V-5.5V supply range and DFN footprint.