LM/LM/LM Operational Amplifiers. General Description. The LM series are precision high speed operational am- plifiers designed for. TL H LMLMLM OperationalAmplifiers. November LM LM LM Operational Amplifiers. General Description. The LM series. Page 1. Page 2. Page 3. Page 4. Page 5. Page 6. Page 7. Page 8.
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Home Questions Tags Users Unanswered.
You’ve only provided 5V. You are expecting the LM to operate with its inputs at the most negative rail i. It is probably written somewhere in the datasheet, but I do not know where. Notice also the output voltage spec – it tells you that the output isn’t guaranteed to get to within 3 volts of either power rail. By using our site, you acknowledge that you have read and understand our Cookie PolicyPrivacy Policyand our Terms of Service.
LM Datasheet(PDF) – TI store
Also, the output can only swing to within 3V of the rails. Schematic and DC operating point is showed in the image. The LM datasheet says it can be powered by a minimum of a 3V single supply, so it works. Zero on non-inverting input for non-inverting amplifier gives output different than zero Ask Question.
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datashewt Maybe some of the parameters in the datasheet can point out why this is happening. Post Your Answer Discard By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.
You beat out Null by 1 minute. Andy aka k 10 Do things like this get better at lower supply voltage?
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Post as a guest Name. The minimum supply voltage for an LM is dtasheet volts – you have it powered at 5 volts. Stjepan Gornik 3 3. By clicking “Post Your Answer”, you acknowledge that you have read our updated terms of serviceprivacy policy and cookie policyand that your continued use of the website is subject to these policies.
National Semiconductor
Null 4, 10 22 You’re also violating the common mode input voltage range for the LM by grounding the non-inverting input and using ground as the VSS rail. The LM will work quite happily down to 3 volts but you have other errors I cannot lm3118 out why the outputs for the amplifiers are different.
Email Required, but never shown. Ratasheet somebody please explain me the difference between outputs on both amplifiers. Sign up or log in Sign up using Google. I know that there should be some input offset voltage that is amplified, but the interesting part is that the output voltage does not depend on the closed loop gain formed by R3 and R4 and R5 and R6 for the other amplifier.