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High-temperature shock-resistant crystal oscillators from Astute

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Astute Electronics is introducing a range of high-temperature oscillators. The Euroquartz high shock-resistant SMD oscillators have frequencies of 320kHz to 50MHz (CXOHT), 200kHz to 50MHz (CXOMKHT) and 1MHz to 50MHz (CXOXHT). They can operate from -55 to +200degC with a stability of 200ppm at the top temperature. At lower temperatures, the stability is even better at 150ppm for +175degC and 100ppm for +150degC.

Ian Fantham, Sales Director, Astute Electronics comments: “For applications with high operating temperatures, the stability of these oscillators is nothing short of excellent.”

Typical specifications at +25degC include a 3.3 or 5.0V supply voltage, +/-10 per cent, and a calibration tolerance of +/-50ppm or tighter as required. Typical supply currents for 3.3V are 3.0, 5.0 and 6.0mA for 24, 32 and 50MHz frequency, respectively. The equivalent currents at 5.0V are 8.0, 10.0 and 14.0mA, respectively. Output load is 15pF and the fast start-up time is a maximum of 5ms. Rise and fall time is 10ms maximum.

The oscillators have high shock resistance; for example, the standard is up to 3000g for 0.3ms, half sine and the HG up to 10,000g for 0.3ms, half sine. Vibration survival figure is 20g, 10 to 2000Hz swept sine. Dimensions of the hermetically sealed packages are 10.29 by 4.83 by 1.6mm (CXOHT), 6.68 by 5.18 by 1.6mm (CXOMKHT) and 3.40 by 2.70 by 1.21mm (CXOXHT). The oscillators are available either tray packed or on tape and reel for more than 250 pieces.

For more information about the Euroquartz high-temperature oscillators please go to www.astute.co.uk.

 
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