Silicon Oscillator operates from -40 to 125°C.
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Press Release Summary:
Offered in 3 x 3 mm SOT23 package, LTC6905 features 100 µs startup, ±2.5% duty cycle variation, and power consumption of 12 mA max at 100 MHz. Oscillator operates from 2.7-5.5 V power supply, and provides rail-to-rail, CMOS output. It is available with master clock frequency of 133, 100, 90, or 80 MHz, and internal 3-state divider allows master clock to be divided by 1, 2, or 4. Non-standard frequencies can be factory trimmed to any output between 2.2-170 MHz.
Original Press Release:
LTC6905-xxx: Tiny 3x3mm Silicon Oscillator Operates from -40°C to 125°C
Milpitas, California, (March 23, 2005) -
It's a familiar story. Just as vacuum tubes, relays and core memory were transformed by solid state technology, silicon oscillators offer big advantages over traditional resonating elements. Linear Technology's silicon fabrication and assembly ensures that the LTC6905-xxx family is inherently immune to shock and vibration, a key advantage over crystals and ceramic resonators. Typical canned oscillators are challenged by long startup, duty cycle drift, and significant power usage. The LTC6905-xxx improves on all of these features with a consistent startup (100us typical), low duty cycle variation (+/-2.5%) and half of the power consumption (12mA Max at 100MHz). Furthermore, the LTC6905-xxx can operate over the full automotive temperature range (-40°C to 125°C).
The LTC6905-xxx series is offered in a small ThinSOTTM package. These parts operate with a single 2.7V to 5.5V power supply and provide a rail-to-rail, CMOS output. An output enable function is provided to disable the output and eliminate pulse slivers when re-enabled.
"The combination of ruggedness, size, power, and performance addresses a demand in the oscillator market that was previously tough to meet," according to Doug LaPorte, design section lead for Linear Technology.
The LTC6905-xxx family is available with a master clock frequency of 133MHz, 100MHz, 90MHz, or 80MHz. An internal three-state divider (DIV input) allows for division of the master clock by 1, 2 or 4 providing a wide range of possible frequencies. For non-standard frequencies, the LTC6905-xxx can be factory trimmed to any output between 2.2 and 170MHz. A resistor programmable version is also available for applications requiring factory or field adjustment to any frequency from 17MHz to 170MHz.
All versions are in full production, with pricing starting at $1.15 each in 1,000-piece quantities.
Summary of Features: LTC6905
Frequency Error: ±1.5% Max (0-70°C, 2.7V-3.6V)
12mA Max @100MHz
100µs Startup Time
50% ±2.5% Duty Cycle
Timing Jitter: 50ps at 170MHz
Rise Time: 0.5ns, CL = 5pF
±20ppm/°C Temperature Stability
CMOS Output Drives 500Ohm Load (VS = 3V)
Operates from a Single 2.7V to 5.5V Supply
Low Profile SOT23 (ThinSOT) Package
