TimerBlox: Voltage Controlled Silicon Oscillator
LTC6990
TimerBlox: Voltage
Controlled Silicon Oscillator
FEATURES DESCRIPTION Fixed-Frequency or Voltage-Controlled Operation
– Fixed: Single Resistor Programs Frequency
with 300kHz at 1MHz
n CMOS Logic Output Sources/Sinks 20mA
n 50% Duty Cycle Square Wave Output
n Output Enable (Selectable Low or Hi-Z When Disabled)
n –55°C to 125°C Operating Temperature Range
n Available in Low Profile (1mm) SOT-23 (ThinSOT™)
and 2mm × 3mm DFN Package The LTC®6990 is a precision silicon oscillator with a programmable frequency range of 488Hz to 2MHz. It can be
used as a fixed-frequency or voltage-controlled oscillator
(VCO). The LTC6990 is part of the TimerBlox® family of
versatile silicon timing devices. n APPLICATIONS n n n Low Cost Precision Programmable Oscillator
Voltage-Controlled Oscillator
High Vibration, High Acceleration Environments
Replacement for Fixed Crystal and Ceramic Oscillators
Portable and Battery-Powered Equipment L, LT, LTC and LTM, Linear Technology, TimerBlox and the Linear logo are registered
trademarks and ThinSOT is a trademark of Linear Technology Corporation. All other trademarks
are the property of their respective owners. Protected by U.S. Patents, including 6342817,
6614313. A single resistor, RSET, programs the LTC6990’s internal
master oscillator frequency. The output frequency is determined by this master oscillator and an internal frequency …
