Hello, I would like a brief review of which of the two chips is better (in terms of noise and gain) when used as a microphone preamplifier.
Thank you
Thank you
The LM387 isn't so bad, 1 uV noise. The NE5532 has 5 nV/Hz which is rather close. Personally I would have chosen NE5532.
Right, I got the idea.
I have a mic preamp using lm387 but I will probably replace it with 5532.
The next stage in the chain is a ne5532 3-band equalizer, which uses a passive filter section (bass treble high) and the 2 buffers of the 5532 as I/O. I would like to know if an active filter section can be made for the mic using the ne5532, as high quality capacitors are too expensive...
any suggestions??
I have a mic preamp using lm387 but I will probably replace it with 5532.
The next stage in the chain is a ne5532 3-band equalizer, which uses a passive filter section (bass treble high) and the 2 buffers of the 5532 as I/O. I would like to know if an active filter section can be made for the mic using the ne5532, as high quality capacitors are too expensive...
any suggestions??
Active Filters or Passisve filters it doesn"t matter you are still going to need Capacitors , probably just as many as a Passive tone controll....
The benefit of a Active filter set up is you can also boost frequencies as well as cut were a Passive filter will only cut ....
Cheers
The benefit of a Active filter set up is you can also boost frequencies as well as cut were a Passive filter will only cut ....
Cheers
The NE5534 is a big improvement over the NE5532. They are so darn cheap you can afford to try both.
-David
-David
This comes as a surprise, because the 5532 is the dual version of the 5534. So for one thing they should sound as similar as can be and for another thing they cannot be replaced with each other without major PCB re-design.
ne5532 is a dual units/package and is unity gain stable.
ne5534 is a single unit/package and is not unity gain stable.
there may be other differences, for example in bias currents; i haven't checked the datasheets for these in many years.
ne55xx series (when properly used) has fairly low thd and can drive low impedance loads.
bjt input parts (like the ne55xx series) are low noise for "low" impedances. depending on your surrounding passive components, you may want to experiment with low noise dual jfet parts also.
good luck!
mlloyd1
ne5534 is a single unit/package and is not unity gain stable.
there may be other differences, for example in bias currents; i haven't checked the datasheets for these in many years.
ne55xx series (when properly used) has fairly low thd and can drive low impedance loads.
bjt input parts (like the ne55xx series) are low noise for "low" impedances. depending on your surrounding passive components, you may want to experiment with low noise dual jfet parts also.
good luck!
mlloyd1
My 1986 Signetics data sheet reports:
NE5533/5534
The op-amps are internally compensated for a gain equal to, or higher than three!
The NE5533 being a dual.
The NE5534 being a single.
NE5533/5534
The op-amps are internally compensated for a gain equal to, or higher than three!
The NE5533 being a dual.
The NE5534 being a single.
After 22 years you should expect some things to change.
NE5532 is internally compensated for unity gain. NE5534 has the option to compensate externally for unity gain.
NE5532 is internally compensated for unity gain. NE5534 has the option to compensate externally for unity gain.
The 2004 and 2006 data sheets (from different manufactures) still say the same thing. So one has to be mindful that when using a circuit designed for one type of IC, if you switch to the other type you have to change more than the pin-out.
Hi,
As far as I know the 5534 use the input transistor array from the
5532, i.e. it has more parallel input transistors and lower noise.
Its stable for gains > 3, the the dual is unity gain stable as there
are no compensation capacitor pins available, being > 3 would be
commercial suicide for any manafacturer making the dual version.
🙂/sreten.
As far as I know the 5534 use the input transistor array from the
5532, i.e. it has more parallel input transistors and lower noise.
Its stable for gains > 3, the the dual is unity gain stable as there
are no compensation capacitor pins available, being > 3 would be
commercial suicide for any manafacturer making the dual version.
🙂/sreten.
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