The mysterious NE5534 in the datasheet of PCM1792

peranders · 1st April 2003, 06:09 PM

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.

jwb · 1st April 2003, 07:02 PM

NE5534 is a good ol' low-noise op-amp. Quite popular in fact. Still, I'll be using a discreet I/V.

mlloyd1 · 2nd April 2003, 05:21 AM

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 ....

mlloyd1

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.

peranders · 2nd April 2003, 06:02 AM

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?

fmak · 2nd April 2003, 06:04 AM

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.

carlosfm · 2nd April 2003, 01:27 PM

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?

leon · 2nd April 2003, 01:41 PM

NE5532/4 is one of the best
Maybe they should rename it and charge 10 times it's price
to keep some happy

carlosfm · 2nd April 2003, 01:46 PM

leon,
Do you know how old is it?
Do you know how these things have evoluted since then?
Oh, well...
Back to the TL072...

fmak · 2nd April 2003, 01:49 PM

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.

leon · 2nd April 2003, 02:01 PM

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.

1st April 2003, 06:09 PM	#1
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	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. __________________ /Per-Anders (my first name) or P-A as my friends call me

2nd April 2003, 06:02 AM	#4
peranders Electrons are yellow and more is better! diyAudio Member Join Date: Apr 2002 Location: Göteborg, Sweden Blog Entries: 4	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? __________________ /Per-Anders (my first name) or P-A as my friends call me

2nd April 2003, 01:27 PM	#6
carlosfm Banned Join Date: Mar 2003 Location: Lisbon, Portugal	Bad beginning, happy end 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?

2nd April 2003, 01:46 PM	#8
carlosfm Banned Join Date: Mar 2003 Location: Lisbon, Portugal	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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1st April 2003, 07:02 PM	#2
jwb diyAudio Member Join Date: Mar 2002 Location: San Francisco, USA	NE5534 is a good ol' low-noise op-amp. Quite popular in fact. Still, I'll be using a discreet I/V.

2nd April 2003, 01:41 PM	#7
leon diyAudio Member Join Date: Jan 2003 Location: Athens	NE5532/4 is one of the best Maybe they should rename it and charge 10 times it's price to keep some happy

2nd April 2003, 02:01 PM	#10
leon diyAudio Member Join Date: Jan 2003 Location: Athens	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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