News at Greenray Industries
Microwave Journal Features Greenray Tech Brief
Greenray engineer John Esterline's Technical Feature in the April 2008 issue of Microwave Journal Magazine explores phase noise in crystal oscillators. The informative article contains valuable theoretical and practical information for design engineers. You can read the full article via our Tech Briefs page or click to visit the Microwave Journal website.
New YH1518 OCXO: Excellent Phase Noise & Compact Package
February, 2008 - Greenray Industries, Inc. has announced the availability of the YH1518 Series OCXO.
Greenray has combined precision crystal technology with a low noise oscillator and multiplier to develop this new family of miniature, ovenized crystal oscillators capable of delivering excellent phase noise performance through 250MHz.
The YH1518 Series design utilizes a precision SC-cut crystal to help achieve low noise performance. SC-cut crystals provide a High Q to reduce the noise close to the carrier - yet are able to withstand the high drive levels necessary for a low noise floor. The oscillator circuit drives a low noise frequency multiplier to increase the frequency up to 250MHz. A thermally enhanced internal assembly enables the use of a small, 1.06 in. x 1.42 in. x 0.5 in. hermetic package. Supply voltage is +12Vdc and typical Temperature Stability is ±0.07ppm over -40°C to +70°C. A Sinewave output of +3dBm min. (+6dBm typical) is provided.
YH1518 Data Sheet ___ YH1518 Announcement
Greenray Hits Top 10 at RF Globalnet - Again
For three years running, a Greenray Industries Technical Paper has been among the top 10 downloads at the RF Globalnet website.
Greenray engineer Steve Fry's Application Note, "The Design and Performance of Precision Miniature TCXOs", provides readers an overview of the history of crystal oscillator temperature compensation and describes the current state-of-the-art in TCXO temperature compensation technology.
Click on the TOP 10 of 2007 icon to visit RF Globalnet and view "The Design and Performance of Precision Miniature TCXOs"
T1220 TCXO Offers OCXO Stability
April, 2007 - Greenray Industries, Inc. has announced the availability of the T1220 Series TCXO.
The T1220 temperature compensated crystal oscillator offers OCXO-like temperature stabilities - as low as ±7 x 10-8 - and the operating temperature range can be specified as wide as -50 to +95°C. Equally impressive, the T1220 features current consumption of less than 30mA.
The T1220 has been designed for applications that require tight stability, low input power (virtually no heat dissipation) and no warm-up time. The T1220's compact, industry-standard package measures just 0.8 in. x 0.5 in. x 0.33 in. (20.32 mm x 12.70 mm x 8.38 mm). With a rugged package and excellent g-sensitivity, the T1220 Series TCXO is ideal for portable as well as airborne applications with demanding environments. The T1220 is available from 10.00 MHz to 50 MHz and with either a 3.3 V or 5.0V supply voltage.
T1220 Data Sheet ___ T1220 Announcement
Greenray Among Top 10 at RF Globalnet
For the second year in a row, a Greenray Industries Technical Paper has been among the top 10 downloads for the year on the RF Globalnet website.
Greenray engineer Barry Kleinle's tech brief, "Phase Noise Explained", proved to be must reading for designers and engineers seeking up-to-date information about phase noise as it relates to crystal-based oscillator component design and manufacture.
RF Globalnet, established in 1996, is an online trade publication and resource center for the RF/microwave design industry.
Click on the TOP 10 icon to visit RF Globalnet and and view "Phase Noise Explained."
RF Design Magazine: Precision Miniature TCXOs
Greenray engineer Steve Fry's Feature Story in the September 2006 issue of RF Design Magazine describes the current state-of-the-art in TCXO technology and associated crystal resonators.
Precision Miniature TCXOs (pdf)
T1177 and T1185 Miniature TCXOs Introduced
June, 2006 - Greenray Industries, Inc. announced the availability of a new family of miniature, high performance TCXOs. Model T1177 and Model T1185 TCXOs combine precision crystal technology, proprietary temperature compensation techniques and low jitter frequency multiplication to achieve tight stabilities at frequencies up through 800MHz. By employing low noise, digitally programmed analog compensation, which is calibrated using a proprietary temperature test system, the new TCXOs achieve the best frequency vs. temperature specs available in a miniature TCXO at these frequencies.
T1177/T1185 Data Sheet ___ T1177 Announcement
T75 TCXO Debuts
January, 2006 - Greenray Industries, Inc. announced the availability of the T75 Series TCXO. The T75 temperature compensated crystal oscillator has been developed as a reference oscillator for critical timing applications that demand a small footprint. The T75 measures just 7mm x 5mm x 2mm and offers stability of ±1ppm over -55 to +95°C. The T75 performs under high shock and vibration and extreme acceleration conditions, offers very low current, and Sine or CMOS outputs. The T75 represents the latest generation of tight stability TCXOs developed by Greenray Industries at its ISO 9001-2000 Pennsylvania facility. The innovative ceramic package was designed and manufactured by AdTech Ceramics (Chattanooga, TN) and the crystal by Statek Corporation (Orange, CA), both sister companies to Greenray.
