[time-nuts] Inside a CTS 1960017 OCXO

Bruce Griffiths bruce.griffiths at xtra.co.nz
Fri Mar 4 02:28:19 EST 2016


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 theĀ  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 <watsondaniel3 at gmail.com> 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.
_______________________________________________
time-nuts mailing list -- time-nuts at febo.com
To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
and follow the instructions there.


  


More information about the time-nuts mailing list