DESCRIPTION

· The LTC6995 is a silicon oscillator from the TimerBlox family, designed for long-duration timing events with a programmable period range from 1.024 ms to 9.54 hours.

· It features a master oscillator frequency set by a single resistor, RSET, and an internal frequency divider, NDIV, which can be programmed to eight different settings.

· The device generates a 50% duty cycle square wave and includes a reset function to stop the oscillator and clear dividers, useful for power-on reset and watchdog timer applications.

FEATURES

· Programmable period range from 1ms to 9.5 hours.

· Timing can be reset by power-on or reset input.

· Configurable with 1 to 3 resistors.

· Maximum frequency error less than 1.5%.

· Programmable output polarity.

· Operates on a single supply from 2.25 V to 5.5 V.

· Supply current ranges from 55µA to 80µA.

· Start-up time of 500µs.

· CMOS output driver capable of sourcing/sinking 20mA.

· Operating temperature range from -55°C to 125°C.

· Available in SOT-23 and DFN packages.

· AEC-Q100 qualified for automotive applications.

APPLICATIONS

· Power-On Reset Timer.

· Long Time One Shot.

· “Heartbeat” Timers.

· Watchdog Timers.

· Periodic “Wake-Up” Call.

· Suitable for high vibration and high acceleration environments.