[sdiy] CA3280 instead of 3080

[James Patchell]

Yes...the two halve can be individually powered...

For more info on the CA3280 see my web page:

http://www.oldcrows.net/~patchell/archives/archives.html

At 07:54 PM 6/2/2005 -0400, Michael Ruberto wrote:
>I have just ordered 2 samples of the CA3280 because I could not find DIP 
>samples of the 3080. I have never worked with the 3280 so I'm wondering if 
>I'll have to make any changes to use it in 3080 based circuits. I see from 
>the datasheet the device has a lower input offset. Does that mean I can 
>eliminate the offset trimmers so common in 3080 designs?
>There are also extra pins, e.g. EMITTER (pins 2,7) and ID (pins 1,8). What 
>are these connections for?
>
>Also I see V+ on 11 & 14, am I right to assume each OTA can be powered 
>individually? It isn't clear considering some of the example circuits 
>employ both pins for power and some don't. The functional diagram is no 
>help here either...
>
>I'd like to use this for a SVF which used the 3080, will it be a headache?
>
>Thanks!!
>
>M.A. Ruberto
>

         -Jim
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