Crystal oscillators

  • 01-Jun-2010 12:20 EDT

NDK’s commercial, off-the-shelf frequency control products include crystals, temperature-compensated crystal oscillators (TCXOs), voltage-controlled crystal oscillators (VCXOs), surface acoustic wave (SAW) devices, and frequency-controlled crystal oscillator (FCXO) modules. The firm’s facilities are qualified per MIL-STD-790, and they also have QPL status. The products are suited for high-reliability demanding environments such as defense communications, aerospace, and maritime. The crystals operate in a temperature range up to -40 to +150°C and frequencies to 50 MHz, with packaging as small as 3.2 x 2.5 mm. The TCXO features a tight frequency stability of ±0.5 ppm and measures 2 x 1.6 mm. The VCXOs come in frequencies up to 700 MHz and have a frequency stability of ±50 ppm. The SAW filter is a miniature 3.8 x 3.8 SMD that has proven itself in remote keyless entry applications. Two FCXO modules are available: a translation/synthesizer device and an advanced Stratum 3 module.

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