Am 18.12.18 um 20:46 schrieb Attila Kinali:
On Sat, 15 Dec 2018 19:02:30 +0200
Anders Wallin <[email protected]> wrote:
That got rid of the self-oscillation - but now I am left with severe (16 dB
@ 230 MHz) gain-peaking! (see attached figure)
Could it be, that the stray capacitance to ground of the non-inverted
input is now too big? You increased the feedback resistors by factor 5,
so effect of the stray capacitance also increased roughly by a factor of 5.
That amount of peaking is a sure sign that the amplifier is still
very, very close to oscillating. John's dead bug construction with the
inputs in mid-air is probably the only way to make the SO-8 chip
work at all at this low gain. And still it's not comfortable.
cheers, Gerhard
_______________________________________________
time-nuts mailing list -- [email protected]
To unsubscribe, go to
http://lists.febo.com/mailman/listinfo/time-nuts_lists.febo.com
and follow the instructions there.
