LTC®6991 Silicon Oscillator

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

Image of Linear Technonology's LTC6991 Silicon OscillatorLinear Technology's LTC6991 is a silicon oscillator with a programmable period range of 1.024 ms to 9.54 hours (29.1 μHz to 977 Hz) 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.

Features

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

LTC6991

ImageManufacturer Part NumberDescriptionAvailable Quantity
LTC6991HS6#TRMPBF datasheet linkIC OSC SILICON PROG TSOT23-6LTC6991HS6#TRMPBFIC OSC SILICON PROG TSOT23-6522 - Immediate
LTC6991HS6#TRMPBF product page link
LTC6991IS6#TRMPBF datasheet linkIC OSC SILICON PROG TSOT23-6LTC6991IS6#TRMPBFIC OSC SILICON PROG TSOT23-61377 - Immediate
LTC6991IS6#TRMPBF product page link
LTC6991CDCB#TRMPBF datasheet linkIC OSC SILICON PROG 6-DFNLTC6991CDCB#TRMPBFIC OSC SILICON PROG 6-DFN382 - Immediate
LTC6991CDCB#TRMPBF product page link
LTC6991CS6#TRMPBF datasheet linkIC OSC SILICON PROG TSOT23-6LTC6991CS6#TRMPBFIC OSC SILICON PROG TSOT23-626 - Immediate
LTC6991CS6#TRMPBF product page link
Published: 2012-06-29