LTC6990IS6#TRMPBF

Programmable Timers And Oscillators Overview

The Analog Devices LTC6990IS6#TRMPBF is a precision silicon oscillator operating within the –40°C to 85°C temperature range. It functions as a fixed-frequency or voltage-controlled oscillator (VCO) with a programmable frequency range of 488Hz to 2MHz. The output frequency is determined by an internal master oscillator and a programmable divider (NDIV) ranging from 1 to 128, set via the DIV pin. A single resistor at the SET input programs the master frequency, while a second resistor enables linear voltage control. The device features a CMOS logic output capable of sourcing or sinking 20mA, a 50% duty cycle square wave, and an enable function for glitch-free operation.

Programmable Timers And Oscillators Feature Summary

• Programmable frequency range from 488Hz to 2MHz using a single RSET resistor
• Internal frequency divider (NDIV) selectable from 1 to 128 via the DIV pin
• CMOS output driver sources/sinks 20mA with 50% duty cycle square wave
• Voltage-controlled oscillator (VCO) mode with linear frequency modulation capability
• AEC-Q100 qualified for automotive applications

Programmable Timers And Oscillators Applications

• Voltage-Controlled Oscillator
• Replacement for Fixed Crystal and Ceramic Oscillators
• Portable and Battery-Powered Equipment
• High Vibration, High Acceleration Environments

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix #TRMPBF indicates Mini Tape & Reel packaging containing 500 units. Confirm the IS6 designation corresponds to the Industrial temperature grade (-40°C to 85°C) and the S6 TSOT-23 package. Ensure compatibility with automotive requirements if applicable, noting that specific automotive reliability reports may require direct factory contact for W-suffix variants.

Programmable Timers And Oscillators Selection Notes

Select the IS6 variant for industrial temperature ranges (-40°C to 85°C); use H or MP grades for extended ranges. Choose the S6 TSOT-23 package for low-profile needs or DCB DFN for thermal performance. For fixed frequency designs, calculate RSET based on the desired NDIV setting to minimize supply current. For VCO applications, ensure the RVCO resistor selection provides the required tuning range and linearity.

Programmable Timers And Oscillators Part Context

The LTC6990IS6#TRMPBF belongs to the TimerBlox family of versatile silicon timing devices from Analog Devices. This family includes various temperature grades (C, I, H, MP) and packages (DCB, S6). The IS6 specifically denotes the Industrial grade version in the 6-lead Plastic TSOT-23 package, designed for cost-effective precision oscillation in standard commercial and industrial environments.

Programmable Timers And Oscillators Replacement Considerations

Direct replacements include other temperature grades of the same package: LTC6990CS6#TRMPBF (Commercial, 0°C to 70°C) and LTC6990HS6#TRMPBF (Extended, -40°C to 125°C). Automotive versions are available with the #W suffix (e.g., LTC6990IS6#WTRMPBF). Package alternatives like the DCB DFN offer different thermal characteristics but require layout adjustments.