Interesting in that the internal construction is similar to the 5.000055MHz CTS
OCXO opened (with a propane torch - nothing inside can was damaged) to deduce
out the pinout and the supply voltage.Oscillator circuit was similar although
the output buffer was a CMOS flipflop that divided the oscillator frequency by
2. Output was 5V CMOS level.
The BSV52 is normally intended to be used as a fast saturated switch in that
its storage time is only a few (13) ns. Traditionally gold doping (although
caesium is another possibility) is used to achieve a sufficiently low minority
carrier lifetime.Gold doping reduces current gain and usually increases the low
frequency noise.
If you open a few more OCXOs you will find that a lot of the newer ones use a
CMOS chip as the output buffer even with a sine output.
Bruce
On Friday, 4 March 2016 3:03 PM, Daniel Watson <[email protected]>
wrote:
Hi all,
I worked out the schematic for the CTS OCXO. You can find it here:
http://syncchannel.blogspot.com/2016/03/schematic-of-cts-1960017-10mhz-ocxo..html
Best regards,
Dan W.
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