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azonenberg>
Ordered a bunch of parts for a new probe design, tentatively to be called the AKL-AV1
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azonenberg>
Single ended high impedance active probe targeting around 3 GHz bandwidth
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azonenberg>
I ordered some BUF802s a while ago with this in mind
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azonenberg>
but now have the preliminary power supply components picked out
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azonenberg>
It will use a LTC1983 charge pump to produce a -5V rail from a +6V input rail
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azonenberg>
then ADP7142 and ADP7182 positive and negative LDOs to produce +/- 4.5V from that
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azonenberg>
Which will then run the BUF802
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azonenberg>
It will be a solder in probe in the same basic form factor as the AKL-PT5, but without a tip resistor - just two tiny wire leads
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d1b2>
<azonenberg> Actually on second thought
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azonenberg>
I think a tip resistor would work. and i can combine with a capacitive dropper similar to a normal 10x scope probe
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azonenberg>
but with much lower C
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azonenberg>
This would also reduce the effective loading as seen by the DUT even less than the raw BUF802 input would
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_whitenotifier-e>
[scopehal-apps] azonenberg b5dab62 - Refresh channels menu after closing dialog when creating a new filter. Fixes #420.