LTC6990HDCB#TRPBF

Programmable Timers And Oscillators Overview

The LTC6990HDCB#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 a single resistor at the SET pin and an internal divider (NDIV) selectable via the DIV pin. Key electrical characteristics include a supply voltage range of 2.25V to 5.5V, CMOS logic output capable of sourcing/sinking 20mA, and a 50% duty cycle square wave. The device operates within a temperature range of –40°C to 125°C.

Programmable Timers And Oscillators Feature Summary

• Programmable frequency range from 488Hz to 2MHz using a single external resistor
• Voltage-controlled oscillator (VCO) capability with linear frequency modulation
• CMOS output driver sources and sinks up to 20mA with selectable high-impedance or low disabled states
• AEC-Q100 qualified for automotive applications

Programmable Timers And Oscillators Applications

• Direct piezo alarm drivers
• Ultrasonic frequency sweep generators
• Speaker alarms with tone modulation
• Full-range VCO oscillators
• Temperature to frequency converters

Programmable Timers And Oscillators Procurement Notes

Verify the specific suffix #TRPBF indicates Tape and Reel packaging when ordering. Confirm the 'H' grade designation corresponds to the –40°C to 125°C operating temperature range required for the application. Ensure the DCB package dimensions match the PCB footprint constraints.

Programmable Timers And Oscillators Selection Notes

Select this part for applications requiring a wide operating temperature range up to 125°C. Use the NDIV setting to optimize between power consumption and start-up time; lower NDIV values minimize current while higher values reduce jitter. For VCO applications, ensure the control voltage range aligns with the desired frequency span.

Programmable Timers And Oscillators Part Context

This component belongs to the Analog Devices TimerBlox family of versatile silicon timing devices. The LTC6990 series includes variants with different temperature grades (C, I, H, MP) and packages (DCB, S6). The HDCB variant specifically combines the high-temperature H grade with the 6-lead DFN package.

Programmable Timers And Oscillators Replacement Considerations

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