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Post by ppa on Dec 8, 2019 17:39:04 GMT -6
Hi All,
I am glad to present the APP992 DIP DUAL, the circuit of each DOA is the same of the APP992 Ver. 2.1. with 990/2520 socket, so they are two indipendent opamps over the same DIP socket. As the original circuit, it can be powered with the classic dual voltages that are used on many gears: +-15V , +-16V ,+-18V and +-24V.
Attached a photo with it on the board that I have designed for the tests.
Thanks for looking
Pier Paolo Attachments:
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Post by mulmany on Dec 8, 2019 22:20:35 GMT -6
What is the clearance required for this to fit? Looks fairly large, but pictures can be deceiving.
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Post by Blackdawg on Dec 8, 2019 22:21:26 GMT -6
Pretty sweet! Thinking of ways on how I can use this..
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Post by ppa on Dec 9, 2019 17:06:37 GMT -6
What is the clearance required for this to fit? Looks fairly large, but pictures can be deceiving. Each DOA board is 1.28 inch x 1.05 inch (32.5 mm x 26.8 mm), so just a bit bigger than an APP992 for 2520 socket or a 2520 clone. The bigger dimensions are for layout needs, since the APP992 v2.1 has a unity gain product of more than 40 Mhz the layout is important, and however, is better designing a good layout since the sound depends even by it. I have not changed the same layout of the original APP992 but I have added only a few of tracks that has been needed.
Regarding clearance, is important to say that the two DOA boards can be kept over the near parts around avoiding shortcuts just by using the right lenght of the DIP socket pins.
Pier Paolo
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