[sdiy] OpAmp question

[Carsten Tönsmann]

That is exactly what I mean.

I designed and built a simple circuit to scan a Fatar keyboard. This circuit 
uses TL064 comparators to get the binary information key pressed / key not 
pressed. The TL064 are supplied with 5V and 0V and it seems that they don't 
do the job correctly. So before I do a redesign of the circuit I want to try 
opamps which can pull to ground and to 5V.

-Carsten

----- Original Message ----- 
From: "James Patchell" <patchell at cox.net>
To: <synth-diy at dropmix.xs4all.nl>
Sent: Monday, September 05, 2005 10:28 PM
Subject: Re: [sdiy] OpAmp question


> Define single supply....
>
> Any opamp can run on a single supply.  Generally, when people say single 
> supply, they are referring to an opamp whose common mode imput range 
> includes the negative rail (ground) and whose output can also go down 
> pretty close to ground....
>
> If you do not require either of those atributes...then the TL074/084 fit 
> the bill....
>
>
> At 01:45 PM 9/5/2005 +0200, Carsten Tönsmann wrote:
>>Hi list,
>>
>>does anybody know a single supply fet input quad opamp which can be 
>>obtained in DIP? The AD824 only exists in SMD format...
>>
>>Thanks in advance
>>
>>Carsten
>
>         -Jim
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