LTC6991IDCB#TRPBF

Programmable Timers And Oscillators Overview

The LTC6991IDCB#TRPBF is a silicon oscillator from the TimerBlox family, designed for long duration timing events. It features a programmable period range of 1.024ms to 9.54 hours (29.1µHz to 977Hz). The output clock period is determined by an internal master oscillator and a programmable frequency divider, NDIV, which offers eight settings from 1 to 2^21. Frequency is set via a single resistor, RSET, connected between the SET and GND pins. The device operates on a single supply voltage ranging from 2.25V to 5.5V.

Programmable Timers And Oscillators Feature Summary

• Period Range: 1ms to 9.5 Hours
• Configured with 1 to 3 Resistors
• <1.5% Maximum Frequency Error
• Output Reset Function
• 2.25V to 5.5V Single Supply Operation
• 55µA to 80µA Supply Current (2ms to 9.5hr Clock Period)
• 500µs Start-Up Time
• CMOS Output Driver Sources/Sinks 20mA
• –55°C to 125°C Operating Temperature Range
• AEC-Q100 Qualified for Automotive Applications

Programmable Timers And Oscillators Applications

• Heartbeat Timers
• Watchdog Timers
• Intervalometers
• Periodic Wake-Up Call
• High Vibration, High Acceleration Environments
• Portable and Battery-Powered Equipment

Programmable Timers And Oscillators Procurement Notes

Verify the specific temperature grade and package configuration against project requirements. The IDCB suffix indicates the –40°C to 85°C industrial temperature range within the 6-lead DFN package. Confirm that the TRPBF suffix aligns with the required tape and reel quantity specifications for the manufacturing process.

Programmable Timers And Oscillators Selection Notes

Select the appropriate DIVCODE setting using a resistor divider on the DIV pin to determine both the frequency division ratio and output polarity. Use Table 1 in the datasheet to calculate precise resistor values for the desired NDIV. Ensure the RSET resistor tolerance and temperature coefficient meet the system's frequency accuracy requirements.

Programmable Timers And Oscillators Part Context

This component belongs to the Analog Devices TimerBlox family of versatile silicon timing devices. The LTC6991 series includes various temperature grades and package options, such as SOT-23 and DFN. The IDCB variant specifically denotes the industrial temperature range (-40°C to 85°C) housed in a 6-lead plastic DFN package.

Programmable Timers And Oscillators Replacement Considerations

Compatible substitutes include other LTC6991 variants with different temperature grades or packages, such as LTC6991HDCB#TRPBF for high temperature operation or LTC6991IS6#TRPBF for TSOT-23 packaging. Ensure the replacement part maintains the same electrical characteristics and pinout compatibility.