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 Forum index » DIY Hardware and Software » Thomas Henry designs
4051/52/53/66 switching circuit question
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madias



Joined: Dec 10, 2013
Posts: 2
Location: Vienna/Austria

PostPosted: Tue Dec 10, 2013 5:15 am    Post subject: 4051/52/53/66 switching circuit question Reply with quote  Mark this post and the followings unread

Hello,
I´m working on a midi/cv controlled modular system and I´ve some questions about the circuit for cmos analog switches (4051-66).
For example:
I use the 8038VCO and wanna choose with a 4051 the waveform (sin, tri...). each waveform output is about 10VPP, 1K impendance, so my idea is:
CD4051: +-9V power rail and for each input 22K resistor (100k better?) and on the output side an inverting opamp with 22k (see picture)

So is this the correct way doing it (crosstalk, preventing to overload the switch)?

Thanks and greets
Matthias


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