TL084CN vs AD731 - diyAudio
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Old 7th September 2007, 03:45 PM   #1
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Default TL084CN vs AD731

Hey guys, I'm trying to modify my pre-amp using TI084CN to AD731. Except from comparing the specifications, I'm not sure if the AD731 will fit as a direct replacement to TI084CN without any modifications to other components or values used. Can anybody enlighten me please?
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Old 7th September 2007, 05:11 PM   #2
x-pro is offline x-pro  United Kingdom
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What is AD731?

Cheers

Alex
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Old 7th September 2007, 06:06 PM   #3
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Maybe he means AD713. The 713 and the TL084 are both fet-input quads several decades old. They were two companies' answer to each other, and are very similar. If you want to update, take something a few generations more recent

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Old 8th September 2007, 02:02 AM   #4
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In the datasheet stated that:"Enhanced Replacement for LF347 and TLO84."
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Old 8th September 2007, 02:17 AM   #5
KSTR is offline KSTR  Germany
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OPA4134

- Klaus
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Old 8th September 2007, 06:42 AM   #6
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Thanks for the reply. It is indeed AD713 and I'm still unsure if I should change to AD713. I mean, do I need to do any other modifications to the circuitry or just do a direct replacement to TL084CN?? Any better idea on what chips to use?
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Old 8th September 2007, 07:04 AM   #7
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"OPA4134"

No longer available in a DIP.
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Old 8th September 2007, 07:35 AM   #8
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Quote:
Originally posted by Leolabs
In the datasheet stated that:"Enhanced Replacement for LF347 and TLO84."

Of course it said, this is marketing of course.
The 713 is also decades old, and that recommendation is probably from the 80's?

Get something really better.


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Old 9th September 2007, 05:07 PM   #9
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Thanks djk..OP3134 is only available in SMD..now have to think of the problem of sourcing a PCB that allow me to convert SMD into DIP.
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Old 9th September 2007, 07:45 PM   #10
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I suggest two dual SMD types, one on either side of an adaptor board.

http://www.futurlec.com/PCBService.shtml

will do a good price on a small order, the only thing left to find is pins to go from the adaptor board to the original 14 pin DIP holes.
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