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Crystal Oscillators Keep Time in LEOS Systems

A line of miniature hybrid crystal oscillators provides stable output frequencies to 162.5 MHz for various satellite systems.

The QT780 series of space-qualified hybrid crystal oscillators has been designed for use as the primary clocks in low-earth-orbit-satellite (LEOS) systems, small communications satellites, and broadcast satellites. These devices come in a broad range of operating frequencies, from 230 kHz to 162.5 MHz, in low-profile packages as small as measuring 5.0 × 7.0 mm and including surface-mount-technology (SMT) packages. The hybrid oscillators consist of a miniature strip quartz crystal and an IC operating at different supply voltages: 1.8, 2.5, 3.3, and 5.0 V dc. The sources include 50-krad total-ionization-dose radiation hardening and shock resistance to 20,000 g’s. They are available with optional screening to MIL-PRF-55310.

Q-Tech Corp., 10150 Jefferson Blvd., Culver City, CA 90232; (310) 836-7900, FAX: (310) 836-2157, E-mail: [email protected].

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TAGS: Defense
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