SMD True SineWave XO offers low phase noise floor performance.

Press Release Summary:

Providing -170 dBc/Hz noise floor at 1 MHz offset, CCSS-945 True SineWave Clock Oscillator (XO) generates frequencies from 10–125 MHz with output level of +5 dBm min into 50 Ω and harmonics lower than -25 dBc. Close-in phase noise performance is -105 dBc/Hz typ at 10 Hz offset. Supplied in 9 x 14 mm SMD package, product is engineered to MIL-STD-883 and MIL-STD-202 specifications, consumes 30 mA max @ 5.0 V, and has no sub-harmonics. Extended operating range -40 to +85°C is available.

Original Press Release:

New SMD True SineWave Clock Oscillator from Crystek Provides High Frequency and Ultra Low Phase Noise Floor Performance

Fort Myers, FL – Crystek Crystals Corporation has launched the CCSS-945 – a True SineWave Clock Oscillator (XO) providing -170 dBc/Hz noise floor at 1 MHz offset.  The close-in phase noise performance is an industry-leading -105 dBc/Hz typical at 10 Hz offset. This high-performance clock oscillator is available in the industry standard 9x14mm SMD package and is engineered to MIL-STD-883 and MIL-STD-202 specifications.

The CCSS-945 Clock Oscillator generates frequencies between 10 MHz and 125 MHz, with output level of +5 dBm min into 50 Ohms and harmonics lower than -25dBc. The CCSS-945 consumes 30 mA max. current @ 5.0 volts and has no sub-harmonics.

The CCSS-945 is ideal for applications requiring ultra-low noise performance similar to more expensive OCXO crystal oscillators. Extended temperature operating range of -40°C to +85°C and other custom specifications are also available.

For pricing details, contact Crystek Corporation.

Family datasheets are available for download at For more information, contact sales at Crystek Corporation, 12730 Commonwealth Drive, Ft. Myers, FL 33913. Tel: 800-237-3061 or 239-561-3311; Fax: 239-561-1025; E-mail:; Web:

Crystek Corporation® has been providing frequency products since 1958, including quartz crystals, XOs (clock oscillators), TCXOs (temperature compensated crystal oscillators), VCOs (voltage controlled oscillators), and VCXOs (voltage controlled crystal oscillators). Crystek operates two divisions dedicated to frequency control. Crystek Crystal is dedicated to the development and manufacture of frequency products using quartz-based resonators. Crystek Microwave develops frequency control and support products for the microwave industry.

Reader Service Inquiries: Please forward to Sales at Crystek Corporation,

12730 Commonwealth Drive, Ft. Myers, FL 33913; E-mail:

(e-mail preferred). Thank you.


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