Good single rail opamps

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Bricolo

Bricolo

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Joined 2002
#1
I'm looking for another opamp to replace the philips TDA1308A I've fired on my soundcard (this is a headphone amp, but don't bother. It's fos a line output, not for headphones)

and the opamp is only powered with 0 and +5V, wich good opamps can I use for this?

so low voltage+single rail.



PS: can I use any +- rails opamp with single rail, and set +V to 1/2 Vcc and add a 1/2Vcc offset to the -V signal? (and off course, an output cap)
 
#2
Bricolo said:
I'm looking for another opamp to replace the philips TDA1308A I've fired on my soundcard (this is a headphone amp, but don't bother. It's fos a line output, not for headphones)

and the opamp is only powered with 0 and +5V, wich good opamps can I use for this?

so low voltage+single rail.

PS: can I use any +- rails opamp with single rail, and set +V to 1/2 Vcc and add a 1/2Vcc offset to the -V signal? (and off course, an output cap)
Click to expand...
This should be a rail-to-rail OP
with good current output drive.

There are crertainly a lot of them around, modern.

Perhaps one of them video 50ohms line drivers.

See each OP amp manufacturers Selection guide
for example Linear Technology
or Burr-Brown
or National Semiconductors
or Philips
or Analog Devices

LT - Linear Technology OP amp Selector Guide

National Analog Amplifiers

halo - no problems the alternatives are out there! 😉 in modern shape ...
 
#3
TI's selector guide is now online

in the past couple days TI just put their op-amp selector up as a 40+ page PDF -- also -- TI is now making knock-offs of some of the Linear chips, by the way. I just got in some LT1013's TI parts and they work identically as compared with the Linear Tech LT1013's.

www.analog.com www.linear.com www.ti.com

Not necessarily a good idea to just split the rail -- without careful attention to detail you will have the signal propogating itself back into the power supply., or the noise of the power supply propogating itself into the amplifier.
 
#5
Bricolo said:
I know those websites

but does womeone know a good sounding single rail opamp?
One that is known to sound good
Click to expand...
My OPamps doesn't make a sound - dead quiet.
If they did make sounds - I'd be totally crazy. 😀

I do not like Cables, that makes sounds either,
hope I never meet any of those....... :bawling: :bawling:

My music make sound from the speakers. 😉

/halo - probably an exception
- having dead quiet components - as far as his ears go 😎
 
#7
He He - that was a good JOKE! Bricolo

Bricolo said:
try to put your ear closer to your opamp 😉
Click to expand...
You make me laugh 🙂

Well, I guess I have to try,
put my OPamp inside my ear .......

I can use some wires to supply the power
to my ear

/halo - will test his OP amps - in the modern way
- by listening tests
 
#8
Re: He He - that was a good JOKE! Bricolo

halojoy said:

You make me laugh 🙂

Well, I guess I have to try,
put my OPamp inside my ear .......

I can use some wires to supply the power
to my ear

/halo - will test his OP amps - in the modern way
- by listening tests
Click to expand...
new project: an opamp with an exponential horn 😀
 
#9
Who need Tweeters & Woofers

Bricolo said:
new project: an opamp with an exponential horn 😀
Click to expand...
Yes, of course!
Who need Woofers & Tweeters
when we have OP-amps that sounds (good)

Just make a good horn to get some
well-sounding
- OP-Speakers -

We can find out the T/S parameters by tests
by running tests on the different OP-amps
What would be the VAS of an OPA2134??


/halo - the new age in Audio is here !!!!!!! 😎
 
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