TLE2426 alternatives?

[threepointone]

Just wondering, is TLE2426 the only chip solution for a voltage divider? doesn't anyone else make something for a railsplitter, like analog or national semiconductor or something? I know there are other ways to do this, but I was just wondering if anyone has ever found any quick and easy IC solution for this (maybe one that can handle more current?)

 

[kin0kin]

you can simply use an opamp to act as the rail splitter. if you need more current, you can buffer them, a cheaper solution is to get a high current out dual opamp and use the second channel as buffer.

 

[amb]

Quote:

Originally Posted by threepointone Just wondering, is TLE2426 the only chip solution for a voltage divider? doesn't anyone else make something for a railsplitter, like analog or national semiconductor or something? I know there are other ways to do this, but I was just wondering if anyone has ever found any quick and easy IC solution for this (maybe one that can handle more current?)

The TLE2426 is certainly not the only way to do it, but it's a convenient way, doesn't take up much PCB space, is cheap, works well (as long as you don't ask it to source/sink very much current), and does not require other external components to do its job.

AFAIK there are is equivalent part from National or Analog, etc.

 

[threepointone]

yeah, that's what I meant--I was looking for something that would be easy to add in and wouldn't force me to add a whole lot of stuff into the board.

which part #?

Quote:

AFAIK there are is equivalent part from National or Analog, etc.

which part? or do you mean there aren't?

 

[amb]

Quote:

Originally Posted by threepointone which part? or do you mean there aren't?

Sorry, typo. I meant to say that National and Analog do not have an equivalent to the TLE2426.

 

[Garbz]

a few transistors diodes and resistors can overcome the problem of the typical resistor divider. But the output impednace is still higher then TLE2426.

 

[thedoctor]

or maybe you could try this:

a buffered voltage divider. works well in all of my builds so far.

 

[Garbz]

Sijosae has another rail splitter somewhere. A design by itself. Actually IIRC it may even be in tangent's guide.

 

[thedoctor]

Quote:

Originally Posted by Garbz Sijosae has another rail splitter somewhere. A design by itself. Actually IIRC it may even be in tangent's guide.

which one? with the Opamp buffer? or this one?

taken from here.

i think there's more.

from here.

threepointone: pick one..

 

[stoneshadow]

Can somebody post the schematic for a dual op-amp railsplitter and buffer
A channel for the rail and the second as a buffer....advanced thx

 

[digger945]

Maybe you can get some ideas here.

Found googling dual op-amp railsplitter.

 

[stoneshadow]

Thanks but the tangentsoft tutorial i allready know...there is a scheme for a op-amp based railsplitter
but i have only a dual op-amp...and if i'll use one channel as railsplitter...why to waste the second channel...i want to use it as buffer...i can try something out...but not shure if it'll work as i'm a newbie...and before doing somethin stubid i wanna know if there is such a schematic with a dual op-amp...one channel for railsplitter and one for buffer
Thank u one more time
Waiting a reply if anyone can post a schematic

 

[diditmyself]

Quote:

Originally Posted by stoneshadow /img/forum/go_quote.gif Thanks but the tangentsoft tutorial i allready know...there is a scheme for a op-amp based railsplitter but i have only a dual op-amp...and if i'll use one channel as railsplitter...why to waste the second channel...i want to use it as buffer...i can try something out...but not shure if it'll work as i'm a newbie...and before doing somethin stubid i wanna know if there is such a schematic with a dual op-amp...one channel for railsplitter and one for buffer Thank u one more time Waiting a reply if anyone can post a schematic

If I understand you right, I think you should look at the PINT
http://tangentsoft.net/audio/pint/misc/sch-1.3.pdf
What opamp do you have in mind? Is it unity gain stable? Does it have enough output current?