Ultra-low phase noise CMOS oscillator provides 168-dBc/Hz noise floor

August 19, 2011 //By Paul Buckley
Ultra-low phase noise CMOS oscillator provides 168-dBc/Hz noise floor
Crystek Corporation has launched a new ultra-low phase noise CMOS oscillator providing a -168 dBc/Hz noise floor. Compact and powerful, the CCHD-575 claims to be the industry’s lowest-jitter clock oscillator in a 5 x 7.5 mm package.

Crystek’s CCHD-575 features a typical phase jitter of 82 fs RMS at 100 MHz. Close-in phase noise is -90 dBc/Hz at 10 Hz, while its floor is at -168 dBc/Hz. The low phase noise performance is useful in applications such as: DACs (digital-to-analog converters), ADCs (analog-to-digital converters), low phase signal sources, and test and measurement.

The CCHD-575 generates frequencies between 50 MHz and 130 MHz. The device's output driver is capable of driving ±24 mA, translating to a rise/fall time of ~600 ps at 100 MHz with a 15 pF load. Input supply voltage of 3.3 Vdc consuming 15 mA of current is required. Extended temperature operating range of -40 to +85°C is also available.

For further information: www.crystek.com.


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