Cost-effective alternative to OCXO

Rakon introduces a line of calibrated dual-crystal oscillators (CDXO) that offer a stability of ±0.1 ppm over an industrial temperature range of -40 to +85° C. The CDXO offers phase-noise performance under vibration, with a G-sensitivity of less than 0.5 ppb/G. The part has no frequency perturbations and stable vibration and shock performance under dynamic conditions. It stands less than 5.6 mm tall with a surface area of 18.3 mm × 11.8 mm. It can be surface-mounted and has reflow compatibility. It features low power consumption and requires less than 3.0 mA for supply voltage ranges from 2.7 to 5.0 VDC. The system interface of the device is entirely digital and requires no analog-to-digital converters, amplifiers or components with offset or drift problems. Applications include satellite, military, EPIRB, telecom, FO, Stratum III timing reference, microwave and GPS. The CDXO is capable of replacing an OCXO in many applications
Rakon
www.rakon.com
sales@rakon.co.nz

DPECL in 5 × 7 mm miniaturized package

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NEL introduces a differential PECL series with the ability to operate at 2.5 VDC. The SD-A2920 differential PECL fast-edge crystal oscillator uses the NEL Halt/Hass technique in its development and manufacturing process. Available in frequency ranges from 75 MHz to 200 MHz, the PECL is well-suited for popular wideband frequencies such as fiber channel, gigabit Ethernet, infiniband, 10 Gb and Sonet. Supply voltages of 3.3 and 2.5 VDC are available.
NEL Frequency Controls
www.nelfc.com

Programmable dual-output synthesizer

Narda introduces high-performance programmable microwave synthesizers for wireless communications systems, Satcom converters, digital radio, and optical networks. A representative design centered at 19 GHz provides two independently controlled RF outputs via an external 12 C interface with step sizes extending from 5 kHz to 10 MHz over a 300 MHz frequency tuning range. Other versions operate within the 6 to 28 GHz frequency range, have tuning spans to 400 MHz and provide an RS-232 interface. Features include low phase noise (typically -92 dBc/Hz @10 kHz offset for a carrier frequency of 19 GHz and step size of 5 MHz); high immunity to severe shock, vibration, and phase hits; SMT construction and low DC power consumption.
NARDA
www.nardamicrowave.com
nardaeast@L-3COM.com

Low phase-noise VCXOs

Bomar Crystal announces improvements to its B18M series VCXOs. The new product provides phase-noise readings of -40 dB at 10 Hz from nominal, and -94 dB at 10 kHz. The VCXOs are offered in the range of 50 MHz to 80 MHz and are available in full-size, 14-pin dip packages with a standard temperature range of 0 to +70° C at 100 ppm and ±100 ppm pullability minimum. The device's phase-noise performance and tight tolerance characteristics make it suitable for telecom switching systems, LANs and wireless communications. These full-size metal thru-hole VCXOs are available in either 3.3 or 5.0 VDC. Tighter tolerances are available upon request.
Bomar Crystal
www.bomarcrystal.com.

Specifications at a glance:

• Phase noise of -40 dB @ 10 Hz/-94 dB @ 10 kHz
• 50 to 80 Mhz frequency range
• 0 to 70° C temperature range
• Minimum pullability of ±100 ppm