Re: "Normal" crystal amplitude

From: Rich Grise (null_at_example.net)
Date: 07/20/04 

Date: Tue, 20 Jul 2004 10:55:40 GMT

Tim Wescott wrote:

> colin wrote:
>
>> its all a trade off, you need a certain amount of drive in order for it
>> to start up properly etc, but too much drive and it will eventualy damage
...
>> "Richard" <rh86@no.spam> wrote in message
>> news:40FB7338.3FBA565E@no.spam...
>>
>>>Should the sine wave from a crystal normally swing the full range from 0
>>>to Vcc? (i.e., 3.3V p-p for a 3.3V supply)

> When I want to get an idea of the amplitudes in an oscillator I'll make
> a 11:1 capacitive divider (C in series with 10C) for the scope probe.
> This keeps the scope from messing up the amplitudes in the circuit (or
> stopping the oscillator altogether).
>
> I don't know if it's the _right_ way, but it works well for me.
>

It's probably pretty close, since that's the way 10X scope probes
work. :-) 

-- 
Cheers!
Rich