[sdiy] more ca3094 info

[Magnus Danielson]

From: Ian Fritz <ijfritz at earthlink.net>
Subject: Re: [sdiy] more ca3094 info
Date: Sat, 23 Mar 2002 10:57:31 -0700

> At 10:13 AM 3/23/2002, Magnus Danielson wrote:
> >From: Ian Fritz <ijfritz at earthlink.net>
> >Subject: Re: [sdiy] more ca3094 info
> >Date: Sat, 23 Mar 2002 09:59:08 -0700
> >
> > > Does the 3094 have any advantage over the 3080 except for the increased
> > > output drive capability?
> >
> >Well, it doesn't have any increased output drive capability,
> 
> The app note says it can drive 300 mA peak. I don't believe a CA3080 can do 
> that.

No, but that output will not operate in the OTA mode, it will provide
a voltage output, and that will have a drive capacity of 100 mA, with
a maximum at 300 mA.

> >  it has an
> >added buffer, just like the 13600. The big point is that you can stick
> >in your capacitor or whatever and then buffer it before you
> >load. Buffering is thus much more important than drivecapability,
> >since also external curcuit hooked in at the OTA output/buffer input
> >will be buffered from the actual load.
> 
> Ah, so you would connect an integrating cap at the "external frequency 
> compensation" pin, pin1.

Yeap! Up to that point, it is just a CA3080 in there!

>  I imagine you could also use the device as a 3080 
> by taking the output current from pin 1?

Indeed you can, indeed you can!

Cheers,
Magnus