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However, there must be a DC path between the output and the negative input to maintain DC feedback. Mentions Tags More Cancel.
I haven’t seen many designs using it? Do you have another question?
The LM has a different pin-out not normally used with dual op-amps – so any board layouts would have to change. All content and materials on this site are provided “as is”. But two 10K resistors and a 47u cap do the same. Agree that ‘ should be your go-to in this case.
Any suggestions would be appreciated. LM is a penny easier because it has a bias voltage built-in, so you can set the output around half-supply. Should I use it? TI is a global datsaheet design and manufacturing company. Sorry for not replying back after I started this thread.
LMN Datasheet, PDF – Alldatasheet
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!
It is made to drive one 10K volume control in the same box, not long wires, multiple loads, etc. Due to the holidays, responses may be delayed. Go to Support forums. Ask a related question Ask a new question. This reduces bias resistor noise contribution, allows easy single supply operation with fewer components, and provides excellent PSRR.
Most of the typical applications shown on the datasheet can be duplicated with “normal” op-amps, but DC biasing will need to be added.
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. We are glad that we were able to resolve this issue, and will now proceed to close this thread. 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?
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LM387N PDF Datasheet浏览和下载
Flu got me pretty seriously! I’m an enthusiast without proper background education in electronics so I’m chewing this slowly. Thanks for your wise replies! 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.
Some unbalance at input impedance but nothing to be alarmed for your application, as input device may not be so cool.
Ask a related question What is a related question? Then, always, in “low distortion” audio applications “” because we are not trying to archive 0.
LM387N replacement OP AMP
Menu Search through millions datqsheet questions and answers User. If I don’t know how it works, I prefer don’t turn it on.
LMN (NSC) PDF技术资料下载 LMN 供应信息 IC Datasheet 数据表 (4/4 页)
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JohnRoberts on September 06, It also has sad output power. 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. Content on this site may contain or be subject to specific guidelines or limitations on use.
If you have further questions related to this thread, you may click “Ask a related question” below. Hi, I started planning a mod on my old console and I wanted to dtaasheet an IC opamp that can run on a single supply voltage Ask a new question Ask a new question Cancel. 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 purpose, title and non-infringement of any third party intellectual property right.
It was an OK part for back then, but I am surprised they still sell them. Something similar to what Audiox did with NE Is it noisy, frequency impaired or something like that?