Something for DAC and "balanced" guys

peranders · 4th June 2004, 07:35 AM

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

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

4th June 2004, 07:35 AM	#1
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	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 __________________ /Per-Anders (my first name) or P-A as my friends call me

4th June 2004, 08:04 AM	#2
hjelm diyAudio Member Join Date: Nov 2003 Location: Västerås	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? __________________ Hjelm

4th June 2004, 08:08 AM	#4
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	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. __________________ /Per-Anders (my first name) or P-A as my friends call me

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4th June 2004, 08:06 AM	#3
Bricolo diyAudio Member Join Date: Nov 2002 Location: Grenoble, FR	-133dB distortion

4th June 2004, 09:56 PM	#5
carlmart diyAudio Member Join Date: Mar 2001 Location: Brazil	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

4th June 2004, 11:24 PM	#6
PSz. diyAudio Member Join Date: Jul 2003 Location: California	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

5th June 2004, 03:52 PM	#7
JonMarsh diyAudio Member Join Date: Jan 2002 Location: Livermore, CA	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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