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NDK’s COTS frequency-control modules are ideal for demanding environments such as defence communications, aerospace, down hole and maritime applications.

The COTS range features crystals, TCXOs, VCXOs, SAW devices and FCXO modules.

NDK’s facilities have been qualified per MIL-STD-790 and they also have QPL status.

The crystals are available in operating temperature ranges of -40C to +150C (less demanding temperatures are available) and frequencies up to 50MHz.

They feature high shock and vibration resistance and have proven themselves in on-engine automotive applications for many years.

They are all SMD with packaging as small as 3.2 x 2.5mm, making them some of the smallest COTS crystals available.

The world’s smallest COTS, GPS grade TCXO (temperature compensated crystal oscillator) product features a tight frequency stability of +/-0.5ppm.

The NT2016S measures just 2.0 x 1.6mm and includes an enable/disable function that allows for deactivation of the oscillator circuit, thus conserving power, making it suitable for battery-powered applications.

It operates in a -30C to +85C temperature range on as low as 1.8VD supply voltage.

The VCXOs (voltage controlled crystal oscillators) are available in frequencies up to 700MHz.

They have a frequency stability of +/-50ppm and with a frequency control range of +/-100ppm/+1.65 +/-1.5V.

They operate in a temperature range of -30C to +85C with a supply voltage of +3.3V DC, providing an LVCMOS, LVPECL, or LVDS output.

The SAW (surface acoustic wave) filter is a miniature 3.8 x 3.8 SMD that has proven itself in RKE (remote keyless entry) applications.

Centre frequencies are 315 and 433.92MHZ (others are available) featuring low insertion loss and excellent out-of-band rejection while operating in a temperature range of -30C to +105C.

Two FCXO (frequency controlled crystal oscillator) modules are available.

The NW34M25WA is a translation/synthesizer device that has a reference input HCMOS 19.44MHz (others are available), with output frequencies of LVPECL of 155.52MHz, 77.75MHz, Hi-Z and HCMOS of 77.75MHz (others are available).

Free-run accuracy is +/-20ppm on this SMD module.

The NW36M25LA is an FCXO advanced Stratum 3 module.

It allows up to four HCMOS inputs and HCMOS outputs of 12.96 to 77.75MHz, M/S8kHz, and a BITS_Clk of 1.544 or 2.048MHz.

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