National Semiconductor LM and. LM, Respectively description. These devices consist of four independent, high- gain frequency-compensated Norton. LM description These devices consist of four independent, high gain frequency-compensated Norton operational amplifiers that were designed. LM MC Unit. Supply Voltage. VCC. + + V. Input Current. Iin. mA on the individual data sheets and the Selector Guide. All of the.

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Jameco has the LM’s: Articles Top Articles Search resources.

The circuit uses a single polarity supply so datashret the non-inverting input of the opamps would cause their outputs to be grounded and they would work like rectifiers.

I probably have few AD’s around, but i dont think i have any LM’s around anymore. You must log in or register to reply here. Redesigning them for other op amps probably wouldnt be much of a problem really.

LM substitute? | Electronics Forum (Circuits, Projects and Microcontrollers)

It can not be replaced with a LM op amp. The LM is a high speed version. For a better experience, please enable JavaScript in your browser before proceeding. It 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. The feedback resistor R3 is dtaasheet Click here to register now. Maybe this was a very old design. Neil Groves New Member Nov 8, Hi, I’d be careful about using an AD for a replacement.


We can call the input resistor R1 and the resistor to ground R2 and the feedback resistor R3. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.

It’s very different than the LM I couldn’t locate one of the latter so relayed datashwet 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: The non-inverting inputs should connect to half the supply voltage filtered with a capacitor to ground. Datasheets, Manuals or Parts.

Quad Single Supply Operational Amplifiers , Inc

Hi again, Yeah i remember these from back in the ‘s. That’s what a specific timer of mine does. Thus you could look for the presence of line to speaker levels very easily and even filter the hiss. I seem to have blown out on at least two things here, i’m gonna scrap that project, build something else i need then come back to it using a different circuit.

To participate you need to register. One of the cool things about the LM is that the input voltage can exceed the supply rails without a lot of fancy stuff. Potentiometer Questions Started by norbss Yesterday at 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 the way you want it to.


From what i read, the NTE is a replacement.

LM Quad Op Amp IC | NightFire Electronics LLC

Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at Back in the 80’s i did. Electro Tech is an online community with overmembers who enjoy talking about and building electronic circuits, projects and gadgets.

The LM is not a normal OP amp. Roff Well-Known Member Nov 8, Media New media New comments Search media. Is an LM a good replacement for an LM? Thread starter Neil Groves Start date Nov 7, Replacement Transformer Started by ncag 59 minutes ago Replies: Welcome to our site!

By continuing to use this site, you are consenting to our use of cookies. It operates on the difference in input current rather than the difference in input voltages. For one thing, the input bias would be different. This may not be the ideal setup, but it might still work.