The mysterious NE5534 in the datasheet of PCM1792 - diyAudio
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Old 1st April 2003, 07:09 PM   #1
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Default The mysterious NE5534 in the datasheet of PCM1792

WHY have Texas chosen NE5534 as an I/V converter followed by a LT1028

http://www-s.ti.com/sc/psheets/sles069/sles069.pdf

Please, explain for me the good reasons for this.
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Old 1st April 2003, 08:02 PM   #2
jwb is offline jwb  United States
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NE5534 is a good ol' low-noise op-amp. Quite popular in fact. Still, I'll be using a discreet I/V.
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Old 2nd April 2003, 06:21 AM   #3
mlloyd1 is offline mlloyd1  United States
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Default Re: The mysterious NE5534 in the datasheet of PCM1792

Obviously, for voicing. The PCM1792 is clearly so clean and clinical that some grungy stuff must be added to make it "musical".

Why are you laughing? Oh, it's April 1st. Never mind ....


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Quote:
Originally posted by peranders
WHY have Texas chosen NE5534 as an I/V converter followed by a LT1028 ...Please, explain for me the good reasons for this.
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Old 2nd April 2003, 07:02 AM   #4
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It's the same thing with AKM but they have ONLY NE5532/34. I'm really puzzled by why TI has chosen a LT1028 after a NE5534. Why put so much effort into one chip and then not recommend the best parts around the chip?
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Old 2nd April 2003, 07:04 AM   #5
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Default Re: The mysterious NE5534 in the datasheet of PCM1792

Quote:
Originally posted by peranders
WHY have Texas chosen NE5534 as an I/V converter followed by a LT1028

http://www-s.ti.com/sc/psheets/sles069/sles069.pdf

Please, explain for me the good reasons for this.
------------------------------------------

These are design engineers, not audiophiles. The 5534 has lo noise, lo distortion but many stages inside. You can also alter compensation.
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Old 2nd April 2003, 02:27 PM   #6
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Oh, I may know the answer.
Those engineers are hard-core tweakers.
They put the crap so that you can tweak it after it's done.
Do they talk about 8-pin sockets?
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Old 2nd April 2003, 02:41 PM   #7
leon is offline leon  Greece
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NE5532/4 is one of the best
Maybe they should rename it and charge 10 times it's price
to keep some happy
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Old 2nd April 2003, 02:46 PM   #8
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Thumbs down NE5532/4

leon,
Do you know how old is it?
Do you know how these things have evoluted since then?
Oh, well...
Back to the TL072...
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Old 2nd April 2003, 02:49 PM   #9
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Quote:
Originally posted by leon
NE5532/4 is one of the best
Maybe they should rename it and charge 10 times it's price
to keep some happy
-----------------------------------

One of the best for measurement; one of the worst for sound. It defines the soincs of much pro equipment.
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Old 2nd April 2003, 03:01 PM   #10
leon is offline leon  Greece
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Only electrons are older than it.
Still they haven't evoluted that much.
I have ears too.
I have used OPA627 and OPA2134.
No big differance.
Although OPA627 is better.
It's ok to say there are better ones but ist's not crap.
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