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-   -   Something for DAC and "balanced" guys (http://www.diyaudio.com/forums/solid-state/35392-something-dac-balanced-guys.html)

peranders 4th June 2004 07:35 AM

Something for DAC and "balanced" guys
 
http://focus.ti.com/lit/ds/symlink/opa1632.pdf

Check out this IC. What do you think?

ULTRA LOW DISTORTION: 0.000022%
LOW NOISE: 1.3nV/√Hz

hjelm 4th June 2004 08:04 AM

Neat even the settling time is ok.
Does anyone know why they specify slew rate and rise and fall time of a step, seems to be the same to me?

Bricolo 4th June 2004 08:06 AM

-133dB distortion :bigeyes:

peranders 4th June 2004 08:08 AM

Slew rate is not exactly the same a rise time in an amp which has feedback.

Slew rate is the absolute maximum rising speed when the amp is overdriven.

carlmart 4th June 2004 09:56 PM

It's interesting that TI/BB puts OPA 134, 627 and 227 as "related" devices. I wonder what that means...

The chip certainly looks good, and it might be an interesting chip to try as single to balanced converter, as they say it can be used.



Carlos

PSz. 4th June 2004 11:24 PM

They do look good indeed! I got some recently, haven't tried them yet...
I'll try to attach my quick and dirty pcb layout from expresspcb.

PSz.

... I tried to attach, but improper file extension, and Bitmap export lost the traces. Oh well it wasn't much to see anyhow:)

JonMarsh 5th June 2004 03:52 PM

Thanks for the heads up; this may be useful in my next project! At the least, it will be once of several approaches compared.

Regards,

Jon


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