Thanks a lot for the input!
I will try to use the LMH6702 as buffer.
The correct way to measure the HCMOS oscillator would probably be to use a
high impedance buffer with very low noise, to simulate driving a 10pF load
or so. But I guess that is not easy to do. The LMH6702 voltage noise is
Why not AC couple the HCMOS output to the LMH6702 input?
Bruce
Anders Time wrote:
Thanks a lot for the input!
I will try to use the LMH6702 as buffer.
The correct way to measure the HCMOS oscillator would probably be to use a
high impedance buffer with very low noise, to simulate driving a
On 12/03/14 10:57, Anders Time wrote:
Thanks a lot for the input!
I will try to use the LMH6702 as buffer.
The correct way to measure the HCMOS oscillator would probably be to use a
high impedance buffer with very low noise, to simulate driving a 10pF load
or so. But I guess that is not easy to
The LMH6702 is a wicked fast op amp which will react accordingly it there are
parasitics in the feedback path. I have only used them with well laid out PWBs
and extremely short traces to surface mount resistors. Under those conditions,
they work beautifully as advertised. Not sure anyone other
Of Anders Time
Sent: Monday, March 10, 2014 8:33 AM
To: time-nuts@febo.com
Subject: [time-nuts] How to measure phase noise of HCMOS oscillators?
A while a go i bought some low phase noise Crystek CVHD-950 and now I
want
to meas the phase noise of the oscillators.
Is it best to try to impedance
On 10/03/14 16:33, Anders Time wrote:
A while a go i bought some low phase noise Crystek CVHD-950 and now I want
to meas the phase noise of the oscillators.
Is it best to try to impedance match the output signal and filter and
amplify the hcmos before i feed it in to the phase detector? or Just
A while a go i bought some low phase noise Crystek CVHD-950 and now I want
to meas the phase noise of the oscillators.
Is it best to try to impedance match the output signal and filter and
amplify the hcmos before i feed it in to the phase detector? or Just hope
that the signal is high enough to
