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LTC®6991 Silicon Oscillator


Linear Technology's LTC6991 is part of the TimerBlox™ family


LTC6991Linear Technology's LTC6991 is a silicon oscillator with a programmable period range of 1.024ms to 9.54 hours (29.1μHz to 977Hz) that is 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. Datasheet

Features
  • Internal oscillator
    • No crystal
    • No timing caps
  • Simple setup using 1 to 3 resistors
    • Period range: 1ms to 9.5 hours
    • <1.5% maximum error
  • Square wave output with 50% duty cycle
  • Output reset function
  • 55μA to 80μA supply current
  • 500μs start-up time
  • 2.25V to 5.5V single supply operation
  • CMOS output driver sources/sinks 20mA
  • –40°C to 125°C operating temperature range

Digi-Key P/N Manufacturer P/N Description
LTC6991CDCB#TRMPBFCT-ND LTC6991CDCB#TRMPBF IC TIMERBLOX OSCILLATOR 6-DFN
LTC6991CS6#TRMPBFCT-ND LTC6991CS6#TRMPBF IC TIMERBLOX OSCILLATOR TSOT23-6
LTC6991IS6#TRMPBFCT-ND LTC6991IS6%23TRMPBF IC TIMERBLOX OSCILLATOR TSOT23-6
LTC6991HS6#TRMPBFCT-ND LTC6991HS6#TRMPBF IC TIMERBLOX OSCILLATOR TSOT23-6