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Old 4th June 2004, 08:35 AM   #1
Electrons are yellow and more is better!
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Default 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
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Old 4th June 2004, 09:04 AM   #2
hjelm is offline hjelm  Sweden
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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?
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Old 4th June 2004, 09:06 AM   #3
Bricolo is offline Bricolo  France
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-133dB distortion
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Old 4th June 2004, 09:08 AM   #4
Electrons are yellow and more is better!
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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.
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Old 4th June 2004, 10:56 PM   #5
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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.



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Old 5th June 2004, 12:24 AM   #6
PSz. is offline PSz.  United States
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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
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Old 5th June 2004, 04:52 PM   #7
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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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