Lowering clock output

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audiokid25

Member
2004-10-01 6:28 pm
I have a Tent Clock XO2 that Im transplanting from one machine to another. Currently the output is 3.3vpp. The new machine requires a 1.5vpp. Can I use a resistor on the clock output to lower the voltage, without affecting the clocks performance? Thanks in Advance!
 

Extreme_Boky

Member
2003-12-07 11:57 am
Hi,

Don't have Tent Clock XO2 diagram....

I would not use voltage dividers - resistors to lower the output value.

Usually there's a feedback resistor of around 47K on the output buffer / inverter. This resistor value gives 5v pp.
For 1.5V pp I would scale this resistor down to around 14K, or put in parallel to 47K another resistor of around 20K.

Hope this helps.

Who's got the Tent Clock XO2 diagram? Is this caned oscillator?

Regards,
Extreme_Boky
 
audiokid25 said:
I have a Tent Clock XO2 that Im transplanting from one machine to another. Currently the output is 3.3vpp. The new machine requires a 1.5vpp. Can I use a resistor on the clock output to lower the voltage, without affecting the clocks performance? Thanks in Advance!


Hi

You could consider using a 2:1 step down transformer from minicircuits (T4-6T) or look at www.Scientificonversion.com for alternatives.

By the way, this is the first time I hear from a machine that needs such low voltage. What is the supply voltage of the chip being fed ?

cheers
 
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