LTC6909HMS#TRPBF

Programmable Timers And Oscillators Overview

The LTC6909HMS#TRPBF is a precision silicon oscillator providing 1 to 8 synchronized multiphase outputs in a 16-lead MSOP package. It operates on a single 2.7V to 5.5V supply with a typical supply current of 400µA. The output frequency is set by a single external resistor (RSET) and ranges from 12.5kHz to 6.67MHz, calculated using the formula fOUT = 20MHz • 10k/(RSET • PH). The device features optional spread spectrum frequency modulation (SSFM) with ±10% spreading to improve electromagnetic compatibility.

Programmable Timers And Oscillators Feature Summary

• Generates 1 to 8 synchronized clock outputs with phase separation ranging from 45° to 120°
• Frequency programming via a single external resistor with a range of 12.5kHz to 6.67MHz
• Spread spectrum modulation enabled for improved EMC performance with rates of fOUT/16, fOUT/32, or fOUT/64
• Outputs can be held low or configured for high impedance (Hi-Z) states

Programmable Timers And Oscillators Applications

• Synchronizing multiple switching power supplies
• Providing multiphase clocks to integrated modules
• Improving electromagnetic compatibility in digital systems

Programmable Timers And Oscillators Procurement Notes

Verify that the component suffix 'H' corresponds to the –40°C to 125°C operating temperature range required for the application. Confirm the '#TRPBF' designation indicates tape and reel packaging compatible with automated assembly processes. Ensure the order matches the specific Analog Devices Inc. part number.

Programmable Timers And Oscillators Selection Notes

Select this model when 1 to 8 synchronized phases are required within a 16-lead MSOP footprint. Use the H-grade variant for industrial or automotive environments requiring operation up to 125°C. Verify that the RSET resistor value falls between 20kΩ and 400kΩ to maintain optimal frequency accuracy and stability specifications.

Programmable Timers And Oscillators Part Context

This component belongs to the LTC6909 family of silicon oscillators. It serves as a higher-channel alternative to the LTC6908 series, which provides only two outputs in smaller SOT-23 or DFN packages. The LTC6909 supports configurations for 3 through 8 phases, whereas the LTC6908 is limited to complementary or quadrature outputs.

Programmable Timers And Oscillators Replacement Considerations

Public confirmed substitute part numbers: None.