Order Number LMM-8 or LMN See NS Package Number M08A or N08E. Order Number LMM-8 or LMN See NS Package. versions (LM, LM) and its output swings. Solenoids Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2All trademarks are Product Folder Links: LMN LMN. LMN-8 Datasheet, LMN-8 National Semiconductor Frequency to Voltage Converter Datasheet, buy LMN
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(PDF) LM2917N-8 Datasheet download
Message Edited by noth on The datasheet for this indicates that it is only good for 50hz to 1Khz so I don’t know if this would help any depending on the frequency your working with. Op-amps such as the LM are intended for single-supply operation LM is quad, not sure if there is a single version. I have now read that the output of this chip is limited to this ammount so I need some ideas please on how to boost the output so it can reach 16v DC at around Hz input.
Set the split to give at least 16V on the positive side, and a lower negative side hopefully enough to give linear response from the amp down to 0V.
I installed it all on a diesel shunting locomotive yesterday and it now has a working tacho for the first time in many years. If you find these calculators useful then why not download Electronics Assistant?
LMN-8 Datasheet(PDF) – National Semiconductor (TI)
I chose the zener version because it offers output stability with supply rail fluctuations which I will have off an alternator, but I think I will try and limit those with a regulator on the supply instead now. Message 3 of 3. Message 1 of 3. I’ve hooked up an LM now to supply 20v as you suggested.
If it is just the output voltage that is low you might be OK with an op-amp on a single supply – after all the output doesn’t need to swing negative. Message 2 of 3.
Tachometer using LMN-8 – Increasing output – Electronics
Most Active Software Boards: You might have to use a lower voltage regulator, a low drop-out type or an LM or similar adjustable regulator set to around 20V or so. Connectors RJxx RJ45 etc.
I don’t even know if your version has this chip or not. A simple footprint is easy to make, however, the simulation file s are much more complicated and I do not have to know how to do this. Remember that the drop-out voltage of a standard 78x regulator is V, so a probably won’t work. Want to suggest a link to add here, exchange links with us or get a banner for your website? Auto-suggest lm2917n- you quickly narrow down datssheet search results by datahseet possible matches as you type.
Message Edited by lacy on Please let me know if you have such a model. I had the idea to use an LMN-8 frequency to voltage converter and after reading through the data knocked up a circuit.
Alternatively a simple transistor amplifier might work. The NS datasheet is poor at explaining this difference but at least one of km2917n-8 example circuits using the has a v output with a 15v supply. The charge pump would be problematic without more detail about it’s internal construction.
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Banana Used on test leads etc. I am designing a circuit in MultiSim and I am utilizing a LMN pin frequency to voltage converter as part of the circuit. Trying to find a component?
Multisim and Ultiboard
Simon Carter Electronics http: Just waiting for my new chip and I’ll report on the results. I was wondering if anyone had a model of this component.
Thanks for any help. The rest would be relatively easy with ideal components. According to the formulas I should be good up to 30K Hz input it previously stopped increasing at 3Khz not 30 as I had written previously.
I have not been able to find a model of this anywhere.