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Old 7th November 2012, 06:52 PM   #1
Tomom is offline Tomom  Australia
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Question OPA 604, 627...

Would anyone know where to get genuine OPA604 and OPA627 and what could be the price? And what is the difference between AP and BP...Thanks!
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Old 7th November 2012, 08:53 PM   #2
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Would anyone know where to get genuine OPA604 and OPA627 and what could be the price? And what is the difference between AP and BP...Thanks!
Please read the data sheet
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Old 7th November 2012, 10:49 PM   #3
DUG is offline DUG  Canada
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Old 8th November 2012, 12:52 AM   #4
Tomom is offline Tomom  Australia
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Quote:
Please read the data sheet
Thanks...There was nothing on price and where to get it in data sheet... oh, AP and BP, yes I found about that two days ago...

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Dug, thanks, I will check... Do you have any practical experience with NE5534 and those two OPA... I am thinking to replace NE5534 with OPA604 in my SONY CDP501. Would that improve sound in any way?
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Old 8th November 2012, 12:05 PM   #5
AndrewT is online now AndrewT  Scotland
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Very different!
I would conclude from that: the chips will get used for different purposes.
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Old 8th November 2012, 05:10 PM   #6
Mooly is offline Mooly  United Kingdom
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Quote:
Originally Posted by Tomom View Post
Thanks...There was nothing on price and where to get it in data sheet... oh, AP and BP, yes I found about that two days ago...



Dug, thanks, I will check... Do you have any practical experience with NE5534 and those two OPA... I am thinking to replace NE5534 with OPA604 in my SONY CDP501. Would that improve sound in any way?
I used OPA604's to replace NE5534's in a Micromega with excellent results but it may not be a straight swap,

Swapping Op-Amps... you have checked to see it's stable haven't you ?
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Old 8th November 2012, 09:41 PM   #7
Tomom is offline Tomom  Australia
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I used OPA604's to replace NE5534's in a Micromega with excellent results but it may not be a straight swap,

Swapping Op-Amps... you have checked to see it's stable haven't you ?
Thank you Mooly; I went to a linked thread where you explained about oscillations and op-amp stability, very good and will help me too. In regards to discussion on that other thread (Swapping op-amps...) it happens that I have an old Tekronix 465M 100MHz oscilloscope, which, at one point in the past, I was thinking to replace with 60 MHZ digital (yeah, I know, silly idea, don't know why...probably new-must-be-better thought); now I am glad I didn't.
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