LTC6990HDCB#TRMPBF

Programmable Timers And Oscillators Overview

The LTC6990HDCB#TRMPBF is a precision silicon oscillator from the TimerBlox family, offering a programmable frequency range of 488Hz to 2MHz. It supports fixed-frequency and voltage-controlled oscillator (VCO) modes. Frequency is set via a single resistor at the SET pin and an internal divider (NDIV) selectable from 1 to 128 through the DIV pin. The device features a CMOS logic output capable of sourcing or sinking 20mA with a 50% duty cycle square wave. It includes an enable function synchronized with the master oscillator for glitch-free operation. The H-grade variant 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 RSET resistor and NDIV divider settings (1–128).
• CMOS output driver sources/sinks 20mA with 50% duty cycle square wave output.
• Voltage-controlled oscillator (VCO) capability with linear frequency modulation via the SET pin.
• Synchronized output enable/disable function ensures clean, glitch-free pulses.
• AEC-Q100 qualified for automotive applications; available in 6-lead DFN package.

Programmable Timers And Oscillators Applications

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

Programmable Timers And Oscillators Procurement Notes

Verify the specific ordering suffix #TRMPBF indicates tape and reel packaging with a minimum quantity of 500 units. Confirm the HDCB suffix corresponds to the 6-lead (2mm × 3mm) plastic DFN package. Ensure the H grade meets the required operating temperature range of –40°C to 125°C for the target application environment.

Programmable Timers And Oscillators Selection Notes

Select the H grade for operations between –40°C and 125°C. Use the DCB package for surface mount requirements in a 2mm × 3mm footprint. Choose the S6 TSOT-23 package if a smaller 6-lead plastic outline is preferred. Verify that the required frequency range falls within the 488Hz to 2MHz limit and that the supply voltage is between 2.25V and 5.5V.

Programmable Timers And Oscillators Part Context

The LTC6990HDCB#TRMPBF belongs to the TimerBlox family of versatile silicon timing devices manufactured by Analog Devices Inc. It serves as a low-cost, precision programmable oscillator alternative to fixed crystal and ceramic oscillators. The device is designed for portable and battery-powered equipment due to its low power consumption and wide supply voltage range.

Programmable Timers And Oscillators Replacement Considerations

Public confirmed substitute part numbers are not provided in the source documentation. Consult Analog Devices for specific cross-reference information regarding equivalent components with similar frequency ranges and package types.