Opinions: On op amp replacement

[Tony Allgood]

>Why not use the Philips NE 5534 instead? It has one third the noise of
the TL071 (4 nV/Hz). The slew rate is the same (13 V/us). It also has a
higher output drive capability. Can drive headphones directly!
The NE 5532 is a dual verision in a standard 8 pin package. Same spec
except the slew rate for some reason is a little lower (9 V/us).

Take note the 5534 is not unity gain stable. It will need compensation.
Read the data sheet for further details. I use a 33p, it works quite
well, but if I was building a RIAA amp, I would look to using better
compensation methods.

The 5532 is unity gain stable. Lovely op-amp, but draws current, and
like the 5534 you must keep the inv and non-inv within 0V6 of each
other.

OP27 and OP275 are better but dearer. But the TL07x is a good part for
audio.

Regards,

Tony Allgood, Cumbria, UK

TB3030 circuit coming soon. Watch the archive.

Rack mounted Moog VCF module. Details to be found at...

http://aupe.phys.andrews.edu/diy_archive/schematics/effects/filter.html