LTC6902IMS#TRPBF

Programmable Timers And Oscillators Overview

The LTC6902IMS#TRPBF is a precision silicon oscillator providing 2-, 3-, or 4-phase outputs in a 10-lead MSOP package. It operates from a single 2.7V to 5.5V supply with a frequency range of 5kHz to 20MHz set by one external resistor (RSET). The device features optional spread spectrum frequency modulation (SSFM) controlled by a second resistor (RMOD) to improve EMC performance. Frequency accuracy is ±1.5% max at 25°C for 5kHz to 10MHz, with temperature stability of –40ppm/°C. Supply current ranges from 0.32mA to 3.5mA depending on configuration.

Programmable Timers And Oscillators Feature Summary

• Multiphase Outputs: Generates 2-, 3-, or 4-phase waveforms via programmable divider and phase selection pins.
• Spread Spectrum Modulation: SSFM capability reduces peak EMI using a pseudorandom noise signal modulated by RMOD.
• One-Resistor Frequency Setting: Output frequency determined by a single external resistor (RSET) between 10kΩ and 2MΩ.
• Low Power Operation: Typical supply current of 400µA at 3V and 1MHz; fast start-up time of 50µs to 1.5ms.

Programmable Timers And Oscillators Applications

• Switching power supply clock references
• Portable and battery-powered equipment
• Clocking switched capacitor filters
• Cell phones and PDAs

Programmable Timers And Oscillators Procurement Notes

Verify the IMS suffix indicates the industrial temperature grade (-40°C to +85°C) as specified in the datasheet. Confirm the #TRPBF suffix denotes tape and reel packaging compatible with automated assembly. Ensure the component matches the Analog Devices manufacturer identification for quality assurance.

Programmable Timers And Oscillators Selection Notes

Select the N divider setting (÷1, ÷10, or ÷100) based on the desired output frequency range to optimize jitter and SSFM performance. Choose the M multiphase mode (2, 3, or 4 phases) according to system requirements. Use precision metal film resistors for RSET and RMOD to maintain frequency accuracy within specified limits.

Programmable Timers And Oscillators Part Context

This part belongs to the LTC6902 family of multiphase oscillators with spread spectrum frequency modulation. The IMS variant specifies the industrial temperature range and MSOP-10 plastic package. It is designed as a low-power, easy-to-use alternative to crystal oscillators for applications requiring flexible frequency generation and improved electromagnetic compatibility.

Programmable Timers And Oscillators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout compatibility and electrical specifications if considering cross-references from other manufacturers.