Author Topic: RD JDS6600 25MHz 2-Channel DDS AW Function Signal Generator  (Read 32145 times)

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Offline bugi

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Re: RD JDS6600 25MHz 2-Channel DDS AW Function Signal Generator
« Reply #175 on: April 14, 2018, 06:27:30 pm »
It seems that the change 1 suggested by takfuji should be also done on the -12V (or -12.5V judging by the resistor ratio?) rail, it is basically identical with the positive side (other than the charge pump series capacitor in between).

I noticed some additional points to improve, like one opamp missing a positive supply cap and a shared opamp having (likely) much less supply cap than suggested in datasheet for the marketed crosstalk figures, but their effects are still only at maybe/theory level, I haven't had time to test/measure those yet.
 


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