high voltage input opamp - Click HERE for Original Thread
sunrise
hi guys....
i need op-amp that has high voltage input - up to 40V plus and 40V minus - total 80Vpp that has high input resistance and that is unity gain stable....
i need it as a voltage buffer - with unity gain folower
any ideas....
i don't need almost no current driving capability but the input voltage has to be high and unity gain stable....
any ideas that are cheap and good (if cheap is possible).....
sunrise
o.k. - to clear things a little bit more....
i need opamp that is:
- unity gain stable
- has rail-to-rail input/output topology or at least common mode input voltage range and output swing must include the voltage range of the signal that is up to arround +/-40V......
so this opamp should be a monster kind of opamp that has very high voltage input and that will work as a unity gain voltage buffer......
help please:cannotbe:
question - what "rail-to-rail input/output topology# really means - what is that.????
theAnonymous1
Extreme......
sunrise
this is really extreme but this design does not have more than 8V at the input - i need +/-50V swing at the input and unity gain stable.....:)
Originally posted by sunrise this is really extreme but this design does not have more than 8V at the input - i need +/-50V swing at the input and unity gain stable.....:)
It is confusing to switch forums in the middle of a thread ... :-(
sunrise
i am sorry Cliff....my apologies but.....i like to hear a lot of opinions......i hope you understand ... :) you are helping - i appreciate this a lot and because of it THNX A LOT :)
so far i know how to make this thing working with interconnetc cables....only have to figure out how to make it work with speaker cables up to 50-70W power amps....
by now i have made a decision - i will try this approach with interconnect cables - if this works - i will try to make it work with speaker cables......
for interconnect cables i think that also OPA604 or OPA2604 might work nicelly too. :)
