[sdiy] TL068 datasheet anyone?

[Magnus Danielson]

From: Nils Pipenbrinck <np at inverse-entertainment.de>
Subject: Re: [sdiy] TL068 datasheet anyone?
Date: Fri, 08 Jul 2005 19:04:16 +0200
Message-ID: <42CEB210.5030308 at inverse-entertainment.de>

> Magnus Danielson wrote:
> 
> >
> >OK. I have the datasheet, including the schematic of the interiour.
> >(...)
> >
> >Now, if that was enougth to satisfy you, then good. If you need the drug badly,
> >I suppose I could have the two pages scanned later at night (I do prefer to
> >stay focused on my GPIB hacking project though, very DIY-oriented I might
> >add!).
> >  
> >
> 
> Thanks, no need for it.
> 
> I still don't exactly understand how the thing exactly works (where does 
> it sources current from? Is the output pulled up to vcc and used as a 
> power supply pin?) but the total unavailability of it makes any further 
> studies useless for me.

Yes, you have the output pulled up with a 10k resistor.

Basically, it acts like a PNP transistor in emitter follower, but with a much
more reduced voltage-offset.

Unavailability is probably the downer yes, I can't remember seeing it.

> I wish there would be a little choice of simple, cheap and available 
> voltage followers with low pincount out there.

I agree.

> Nothing against dip-opamps, but sometimes they mess up the pcb design and
> force me to layout in a way that I don't aesthetically like. (I know it's BS,>> but... ) <http://dict.leo.org/se?lp=ende&p=/Mn4k.&search=aesthetically>

The standard pattern for an dual op-amp makes buffering very simple.

> Along these lines, if anyone knows about a good general purpose 
> audio-opamp with SIP-package let me know.

Not from the top of my head.

Cheers,
Magnus