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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I am designing a circuit in MultiSim and I am utilizing a LMN pin frequency to voltage converter as part of the circuit. I don’t even know if your version has this chip or not. Other than this, you are left with the only l2917n-8 of creating your own and I don’t know how that could be accomplished with the information contained in the datasheet.

I chose the zener version because it offers output lm9217n-8 with supply rail fluctuations which I will have off an alternator, but I lm29177n-8 I will try and limit those with a regulator on the supply instead now.

Message Edited by lacy on Connectors RJxx RJ45 etc. 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. Message 1 of 3. Do I need a transistor amplifier?

Remember that the drop-out voltage of datasheet standard 78x regulator is V, so a probably won’t work. Op-amps such as the LM are intended for single-supply operation LM is quad, not sure if there is a single version.

I’ve hooked up an LM now to supply 20v as you suggested. There is another version of the same chip LMN-8 which doesn’t have this zener so I will try one of those first I think, Vcc will be 24v to the chip so higher output voltage should be possible.

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National Semiconductor

I installed it all on a diesel shunting locomotive yesterday and it now has a working tacho for the first time in many years. Thanks for the info. 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.

Click here for details. Just waiting for my new chip and I’ll report on the results. You can look to see if you have it and whether or not it would be suitable for your apllication.

The only thing that might kill it now is low temperatures as the LM daatsheet I had on hand was a ‘T’ version which is only good down to 0 degrees C, I may have to upgrade it to an ‘AT’ version at a later date good for degs. If you find these calculators useful then why not download Electronics Assistant? 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.

(PDF) LM2917N-8 Datasheet download

Not sure where to start? Is there any way of applying a positive offset of say 0. Message 3 of 3. Thanks for any help. You need to experiment to see if this would work though – it’s not something I’ve had the need to try.

LMN-8 Datasheet

datzsheet Message 2 of 3. Trying to find a component? Take a look at our beginners guide to getting started in the world of electronics. 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.

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Please let me know if you have such a model. The charge pump would be problematic without more detail about it’s internal construction. The rest would be relatively easy with ideal components.

National Semiconductor – datasheet pdf

Alternatively a simple transistor amplifier might work. Most Active Software Boards: Banana Used on test leads etc. Set the split to give at least 16V on the positive side, and a lower negative side hopefully enough to give linear datashwet from the datasehet down to 0V. I have now read that lm9217n-8 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. Post any general technical questions here.

I have not been able to find a model of this anywhere. The NS datasheet is poor at explaining this difference but at least one of the example circuits using the has a v output with a 15v supply.

Only problem is that you don’t get a linear response near 0V. Simon Carter Electronics http: Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. I was wondering if anyone had a model of this component. Kittmaster’s Om2917n-8 Database http: Message Edited by noth on