On 14/10/2010, at 18.46, Jens Boos wrote: > Hi Per, > > hmm the CA3162 is an interesting chip, but spontaneously I would > certainly not know where still to obtain it... I checked Ebay, though, > and they are for sale @ 15EUR a piece. My ADCs from Maxim were cheaper > as samples ;-) But I don't get something: You can use the chip for > many input voltages with a coltage divider. But how does the chip > "know" which is the original reference voltage?
It has a built-in ultra stable bandgap voltage reference :-) I bought them at a local electronics shop for around 5$ a piece. They are still obtainable, somebody just think they should sell them as they were gold, not old chips :-) Anyway, it works fine for me :-) I am still working on the PCB layout for the tubes, i was originally working with a round footprint for the pins, but when you have several tubes alongside, and need to route all the pins i parallel, you really run short of space, so i got the great idea of mounting the tubes in standard DIL format, 14 pins, not a problem, and routing the pins is easy. // Per. -- You received this message because you are subscribed to the Google Groups "neonixie-l" group. To post to this group, send an email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/neonixie-l?hl=en-GB.
