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Old 16th December 2008, 11:06 PM   #1
bernat is offline bernat  Europe
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Question ad712jn replacement

Hi, I have a digital crossover and the output opamps are Ad712jn, is possible to replace them with a better ones, any suggestions? thanks in advance
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Old 17th December 2008, 05:47 PM   #2
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You can try AD823, AD8620, LM4562, OPA 627x2...
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Old 17th December 2008, 09:05 PM   #3
bernat is offline bernat  Europe
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Ok, i will try some of them, do you know if is necessary the bypass cap for avoid oscillation problems?
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Old 18th December 2008, 06:29 PM   #4
bernat is offline bernat  Europe
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The AD712 is Jfet and The LM4562 is bipolar, I think I read is problematic to swap jfet with bipolar, I'm correct?
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Old 19th December 2008, 10:19 AM   #5
Mooly is offline Mooly  United Kingdom
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You need to examine the circuit to be sure. It's not neccessarily a problem, but it is something to be aware of. Bipolar types may give considerably higher offset voltages, again depending on the circuit implementation.
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