LTC6990HS6#TRMPBF

Programmable Timers And Oscillators Overview

The LTC6990HS6#TRMPBF is a precision silicon oscillator from the TimerBlox family, featuring a programmable frequency range of 488Hz to 2MHz. It operates as either a fixed-frequency or voltage-controlled oscillator (VCO). The device uses a single resistor at the SET pin to program the internal master oscillator and an internal divider with eight settings (NDIV = 1 to 128) to determine the output frequency. It provides a CMOS logic output capable of sourcing and sinking 20mA with a 50% duty cycle square wave. The HS6 suffix indicates an operating temperature range of –40°C to 125°C in a 6-lead TSOT-23 package.

Programmable Timers And Oscillators Feature Summary

• Programmable frequency range from 488Hz to 2MHz using a single external resistor
• Voltage-controlled operation capability for frequency modulation applications
• CMOS output driver with 20mA source/sink current capability
• AEC-Q100 qualified for automotive applications with –40°C to 125°C temperature rating

Programmable Timers And Oscillators Applications

• Ultrasonic frequency sweep generators
• Direct piezoelectric alarm drivers
• Speaker alarms with tone modulation
• Overvoltage detectors and alarms

Programmable Timers And Oscillators Procurement Notes

Verify the specific ordering suffix #TRMPBF confirms the Mini Tape & Reel packaging quantity and lead-free finish. Confirm the HS grade designation matches the required –40°C to 125°C operating temperature range for the target environment. Ensure the S6 package type aligns with the PCB footprint requirements.

Programmable Timers And Oscillators Selection Notes

Select this component when a wide frequency tuning range or VCO functionality is required compared to fixed oscillators. Choose the HS variant specifically for high-temperature environments up to 125°C. Consider the NDIV divider settings to optimize between power consumption and start-up time based on the desired output frequency.

Programmable Timers And Oscillators Part Context

This part belongs to the Analog Devices TimerBlox family of versatile silicon timing devices. It serves as a low-cost replacement for fixed crystal and ceramic oscillators in portable and battery-powered equipment. The device is designed for high vibration and acceleration environments where mechanical resonators might fail.

Programmable Timers And Oscillators Replacement Considerations

Public confirmed substitute part numbers are not provided in the documentation. When replacing fixed oscillators, verify that the new silicon oscillator's frequency accuracy and jitter specifications meet the system requirements.