Product category:
Frequency Control Components
News Release from: Rakon UK | Subject: CFPO-20 series
Edited by the Electronicstalk Editorial
Team on 26 July 2005
Novel hybrid oscillators hit the streets
C-Mac MicroTechnology has released the first commercial products based on its proprietary TC-OCXO (temperature-compensated oven-controlled crystal oscillator) technology.
C-Mac MicroTechnology has released the first commercial products based on its proprietary TC-OCXO (temperature-compensated oven-controlled crystal oscillator) technology Designed to combine the high stability of an OCXO with the comparatively low power consumption, small size and light weight of a TCXO, the new CFPO-20 series TC-OCXOs offer stabilities to within +/-0.025ppm over operating temperature, with output frequencies between 5 and 20MHz
This article was originally published on Electronicstalk on 18 Sep 2007 at 8.00am (UK)
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The CFPO-20 series is aimed primarily at mobile, battery powered and remote applications such as GPS, satellite communications and secure radio.
These applications commonly use both TCXOs - small, low-power yet high-stability frequency reference sources - and OCXOs - offering stabilities at least an order of magnitude better but with greater package size, power consumption and cost.
The CFPO-20 series combines the best characteristics of TCXOs and OCXOs by using a simple miniature oven to keep the crystal oscillator at an approximately constant temperature, slightly above its specified operating temperature range, and compensating for residual temperature-related frequency errors using C-Mac's Pluto compensation technology.
Further reading
One oven is better than two for budget oscillation
C-Mac Microtechnology has a new range of highly competitive single-oven oven-controlled crystal oscillators.
Budget pricing for surface-mount oscillators
The CFPT-125 series is a range of low-cost 7 x 5mm SMD temperature-compensated voltage-controlled crystal oscillators (TCVCXOs).
As a result, the CFPO-20 series offers stability down to +/-0.025ppm over the -20 to +70C operating temperature range, or +/-0.05ppm for -40 to +85C, from a 3.3 or 5.0V supply, in an industry standard 20.7 x 13.08mm DIL package.
Power consumption is less than 400 or 525mW, respectively, for the above operating temperature ranges, at -20C steady state.
Standard output frequencies are 5, 6.4, 8 and 8.192MHz with square HCMOS output, and 10, 12.8, 16, 16.384 and 20MHz with either square HCMOS or AC-coupled clipped sinewave output.
Other frequencies in the range from 1.25 to 33MHz are available to certain specifications on request, as are square ACMOS and DC-coupled sinewave outputs.
The crystal ageing effect over 10 years is specified to within +/-3ppm for output frequencies up to 20MHz and +/-5ppm for frequencies above 20MHz, with frequency adjustment of +/-5 or +/-7ppm, respectively, available to compensate for ageing.
"Particularly in portable applications it is of paramount importance to minimise battery consumption, package size and cost", said Karl Ward, Senior Design Engineer with C-Mac Frequency Products.
"Designers welcome any component that lends a helping hand, and the CFPO-20 is a ground breaker, combining stability approaching that of an OCXO with power, size and cost more like those of a TCXO".
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