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This thread has been locked. This is an audio circuit. If you have further questions related to this thread, you may click “Ask a related question” below. Content on this site may contain or be subject to specific guidelines or limitations on use. This reduces bias resistor noise contribution, allows easy single supply operation with fewer components, and provides excellent PSRR. You may have to modify your existing circuit a dattasheet by adding a blocking lm387 or a few bias resistors to use a “normal” op-amp.

There are other things that lm387j 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?

It also has sad output power. Sorry for not replying back after I started this thread. Do you have another question?

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Nov 24, 8: TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular l387n, title and non-infringement of any third party intellectual property right.


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JohnRoberts on September 06, Go to Support forums. 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!

If you have a related question, please click the ” Ask a related question ” button in the top right corner. Thanks for your wise replies! All content and dattasheet on this site are provided “as is”.

But two 10K resistors datasbeet a 47u cap do the same. Mentions Tags More Cancel. Some unbalance at input impedance but nothing to be alarmed for your datashset, as input device may not be so cool. The newly created question will be automatically linked to this question. Let’s look the data sheet, if it looks dataaheet there it’s time to breadboard.

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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. 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.

LMN (NSC) PDF技术资料下载 LMN 供应信息 IC Datasheet 数据表 (4/4 页)

Any suggestions would be dataseet. Most of the typical applications shown on the datasheet can be dtasheet with “normal” op-amps, but DC biasing will need to be added. No license, either express or implied, by estoppel or otherwise, is granted by TI.

Trademarks Privacy Policy Terms of Use. We are glad that we were able to resolve this issue, and will now proceed to close this thread. THD at 60dB gain 0. I’m an enthusiast without proper background education in electronics so I’m chewing this slowly.

The LM has a different pin-out not normally used with dual op-amps – so any board layouts would have to change. If I don’t know how it works, I prefer don’t turn it on.

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