Silicon oscillator with a 29.1 µHz to 977 Hz sweep
The LTC6995CS6-1#TRMPBF is a silicon oscillator from the TimerBlox® family that covers a frequency range from 29.1 µHz to 977 Hz — that is periods from under a millisecond to nearly ten hours, all set with a single external resistor. At 135 µA typical supply current, it draws less than a standard 32.768 kHz crystal oscillator plus divider chain, making it a fit for battery-powered interval timers, watchdog circuits, and low-frequency pulse generators.
