LTC6990IS6#TRPBF

Programmable Timers And Oscillators Overview

The LTC6990IS6#TRPBF is a precision silicon oscillator from the TimerBlox family, offering a programmable frequency range of 488Hz to 2MHz. It functions as either a fixed-frequency or voltage-controlled oscillator (VCO). The output frequency is set by an internal master oscillator and a programmable divider (NDIV) ranging from 1 to 128. Key electrical characteristics include a typical frequency accuracy of ±0.8% in the recommended range, a 50% duty cycle square wave CMOS output capable of sourcing/sinking 20mA, and an operating supply voltage of 2.25V to 5.5V. The device operates within a temperature range of –40°C to 85°C.

Programmable Timers And Oscillators Feature Summary

• Programmable frequency range from 488Hz to 2MHz using a single resistor or VCO configuration
• Internal frequency divider with eight settings (NDIV = 1, 2, 4, 8, 16, 32, 64, 128)
• CMOS logic output sources and sinks up to 20mA with selectable high-impedance or low disabled state
• AEC-Q100 qualified for automotive applications

Programmable Timers And Oscillators Applications

• Voltage-Controlled Oscillator (VCO) with linear frequency control
• Replacement for fixed crystal and ceramic oscillators
• Portable and battery-powered equipment requiring low power consumption
• High vibration and high acceleration environments

Programmable Timers And Oscillators Procurement Notes

Verify that the ordering suffix #TRPBF corresponds to the Tape and Reel (Mini) packaging format. Confirm the 'I' grade designation matches the required –40°C to 85°C specified temperature range. Ensure the S6 package type aligns with the PCB footprint requirements. Check for any specific automotive reliability reports if the application demands AEC-Q100 compliance documentation.

Programmable Timers And Oscillators Selection Notes

Select the NDIV setting to balance power consumption against start-up time and jitter performance; lower NDIV values minimize current while higher values reduce jitter. Use precision resistors (0.5% tolerance or better) for RSET to maintain frequency accuracy within the ±0.8% specification. Ensure the DIV pin voltage divider uses 1% resistors to accurately program the divider code. Consider the output drive capability when connecting to low-impedance loads to stay within the 20mA limit.

Programmable Timers And Oscillators Part Context

This component belongs to the Analog Devices TimerBlox family of versatile silicon timing devices. The IS6 variant specifically denotes the Industrial temperature grade (-40°C to 85°C) housed in a 6-lead Plastic TSOT-23 package. It serves as a flexible alternative to traditional discrete oscillator circuits, integrating both the master oscillator and programmable divider into a single compact solution.

Programmable Timers And Oscillators Replacement Considerations

Public confirmed substitute part numbers are not available in the provided datasheet.