LTC6991

LTC6991 TimerBlox: Resettable, Low Frequency Oscillator FeaTures n n n n n n DescripTion The LTC®6991 is a silicon oscillator with a programmable period range of 1.024ms to 9.54 hours (29.1µHz to 977Hz), specifically intended for long duration timing events. The LTC6991 is part of the TimerBlox™ family of versatile silicon timing devices. A single resistor, RSET , programs the LTC6991’s internal master oscillator frequency. The output clock period is determined by this master oscillator and an internal frequency divider, NDIV , programmable to eight settings from 1 to 221. tOUT = NDIV • RSET • 1.024ms, NDIV = 18, 64,..., 221 , 50kΩ n n n n Period Range: 1ms to 9.5 Hours Configured with 1 to 3 Resistors