LTC6995CDCB-1

Programmable Timers And Oscillators Overview

The LTC6995CDCB-1 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 frequency is set by a single external resistor, RSET, connected between the SET and GND pins. An internal 4-bit A/D converter on the DIV pin selects one of eight divider settings (NDIV = 1 to 221) and determines output polarity. The device operates on a single supply voltage of 2.25V to 5.5V with supply currents ranging from 55µA to 80µA depending on the clock period. It includes an active-high reset input specific to the -1 variant.

Programmable Timers And Oscillators Feature Summary

• Programmable period range from 1.024ms to 9.54 hours using a single RSET resistor
• Internal 4-bit A/D converter on DIV pin selects NDIV (1 to 221) and output polarity
• Active-high reset input for LTC6995-1; configurable output state during reset
• Low power consumption: 55µA to 80µA supply current over full period range

Programmable Timers And Oscillators Applications

• Power-on reset timers
• Watchdog timers
• Periodic wake-up calls
• Long time one-shot circuits
• Heartbeat timers in high vibration environments

Programmable Timers And Oscillators Procurement Notes

Verify the ordering suffix #TRMPBF indicates tape and reel mini packaging. Confirm the CDCB designation corresponds to the 6-lead DFN package and 0°C to 70°C specified temperature range. Check for automotive grade alternatives if wider temperature ranges or AEC-Q100 qualification are required.

Programmable Timers And Oscillators Selection Notes

Select the LTC6995-1 variant for active-high reset logic. Use Table 1 in the datasheet to determine the correct resistor divider values for the DIV pin based on the desired NDIV and POL bit settings. Ensure RSET tolerance is within 0.5% for maximum frequency accuracy. Limit capacitance on the DIV pin to less than 100pF to ensure proper settling.

Programmable Timers And Oscillators Part Context

This component belongs to the Analog Devices TimerBlox family of silicon timing devices. The LTC6995 series offers versatile low-frequency oscillation capabilities. The -1 suffix denotes the version with an active-high reset input, distinguishing it from the -2 variant which uses an active-low reset. The DCB package provides a compact 2mm x 3mm footprint.

Programmable Timers And Oscillators Replacement Considerations

LTC6995IDCB-1#TRMPBF offers the same functionality with an extended operating temperature range of –40°C to 85°C. LTC6995HDCB-1#TRMPBF supports –40°C to 125°C. Automotive qualified versions are available with the #W suffix, such as LTC6995IS6-1#WTRMPBF.