Top View. Order Number LMN LMM LMN or LMN. See NS Package Number M14A or N14A. C National Semiconductor Corporation. LMN. LMN. MCP. TA = 0° to +70°C. TA = – 40° to +85°C. SO– Plastic DIP on the individual data sheets and the Selector Guide. All of the. LMN Datasheet, LMN National Semiconductor Quad Amplifier Datasheet, buy LMN.
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LMN Datasheet(PDF) – National Semiconductor (TI)
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Thread starter Neil Groves Start date Nov 7, Neil Groves New Member Nov datashert, Is an LM a good replacement for an LM? I couldn’t locate one of the latter so relayed my circuit to use an LM instead, well it doesn’t work, i checked my output from the first stage and it sits at 10V although the input is a 4V p-p sine wave from my generator, i am building the circuit here: Hi, The LM was a very different kind of op amp.
It operates on the difference in input current rather than the difference in input voltages. It can not be replaced with a LM op amp. From what i read, the NTE is a replacement. The LM is a high speed version. Datwsheet would be possible however to change the design a little to use a more typical op amp.
From the LM data sheet it looks like the three amps with two caps each are just bandpass filters.
Redesigning them for other op amps probably wouldnt be much of a problem really. The Q of each bandpass would be a little higher though so you’d have to try it and modify the values slightly if it doesnt seem to work dwtasheet way you want it to. We can call the input resistor R1 and the resistor to ground R2 and the feedback resistor R3. The feedback resistor R3 is then: This may not be the ideal setup, llm3900n it might still work.
LMN Datasheet(PDF) – Motorola, Inc
The circuit uses a single polarity supply so grounding the non-inverting input of the opamps would cause their outputs to be grounded and they would work like rectifiers. The non-inverting inputs should connect to half the supply voltage filtered with a capacitor to ground.
Neil Groves New Member Nov 8, The LM is not a normal OP amp. One of the cool things about the LM is that the input voltage can exceed the supply rails without a lot of fancy stuff. Thus you could look for the presence of line to speaker levels very easily and even filter the hiss.
That’s what a specific timer of mine does. Hi, I’d be careful about using an AD dayasheet a replacement. It’s very different than the LM For one thing, the input bias would be different.
I probably have few AD’s around, but i dont think i have any LM’s around anymore. Datsaheet in the 80’s i did. Hi again, Yeah i remember these from back in the ‘s. I am surprised to see them in circuits today.
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