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You may have to modify your existing circuit a bit by adding a blocking cap or a few bias resistors to use a “normal” op-amp. I want to do a balancing circuit for the direct outs.
Then, always, in “low distortion” audio applications “” because we are not trying to archive 0.
It is made to drive one 10K volume control in the same box, not long wires, multiple loads, etc. Nov 27, This thread has been locked.
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The main concern is that the circuit itself should need no changing with the replacement. No license, either express or implied, by estoppel or otherwise, is granted by TI.
Something similar to what Audiox did with NE Go to Support forums. We are glad that we were able to resolve this issue, and will now proceed to close this thread.
This is an audio circuit. Sorry for not replying back after I started this thread. Ask a related question Ask a new question. I would suggest using something more modern, this part was designed to operate at high gain not stable below 10x with small input voltages, and nominal input voltage DC biased internally. Let’s look the data sheet, if it looks right there it’s time to breadboard.
However, there must be a DC path between the output and the negative input to maintain DC feedback. I haven’t seen many designs using it? Agree that ‘ should be your go-to in this case. Hi, I started planning a mod on my old console and I wanted to find an IC opamp that can run on a single supply voltage This reduces bias resistor noise contribution, allows easy single supply operation with fewer components, and provides excellent PSRR.
LM is a penny easier because it has a bias voltage built-in, so you can set the output around half-supply.
LMN Datasheet PDF – National ->Texas Instruments
Most of the typical applications shown on the datasheet can be duplicated with “normal” op-amps, but DC biasing ddatasheet need to be added. Everything you listen to has been through multiple ‘s. Content on this site may contain or be subject to specific guidelines or limitations on use.
All content and materials on this site are provided “as is”. I’ve seen wired things with this though, but nobody says so in the data sheet, for example, lower offset working input voltage close to lower rail than at the mid point, but that’s not a good thing, I would prefer having all the time the worst case offset in most applications, at least than this, this implies a huge unlinearity and baaad CMRR!
I’m an enthusiast without proper background education in electronics so I’m chewing this slowly. Use of the information on this site may require a license from a third party, or a license from TI. It was an OK part for back then, ddatasheet I am surprised they still sell them.
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The LM has a different pin-out not normally used with dual op-amps – so any board layouts would have to change.
The LMN has been obsoleted.
LM387N replacement OP AMP
There are other things that usually are associated with it which is good to appear on the data sheet, for example input beyond the rails or rail to rail output, or one rail inside or close to the output range which are useful to know, but single supply, dual supply? But two 10K resistors and a 47u cap do the same.
JohnRoberts on September 06, I never understood quite well the single supply thing on opamps, usually your opamps don’t refer anything to ground, I mean, there isn’t any pin from it connected to ground, so it knows if it has a dual or single rails. Is it noisy, frequency impaired or something like that?
If I don’t know how it works, I prefer don’t turn it on. If you have a related question, please click the ” Ask a related question ” button in the top right corner.