The LM, LM, and LM devices are single high-speed voltage comparators. High-Reliability Automotive Applications; Configuration Control and Print. NOTE: Page numbers for previous revisions may differ from page numbers in .. A typical LMMIL application compares a single signal to a. Circuit Description. FIGURE 1. Simplified Schematic of the Comparator. National Semiconductor. Application Note Robert J. Widlar. October

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Cant get pin 7 to turn on though. Product is in volume production 0. Replacing a 4 pin leaded inductor with a 2 pin Started by gkmaia Yesterday at Not Recommended for New Design.

Buy Direct Add to cart. Is there something obvious about this chip that I am not aware of that would be the problem?

Problem with LM voltage comparator | Electronics Forum (Circuits, Projects and Microcontrollers)

Here are some other links for more info: Support Center Video Center. Have a look at any textbook on negative feedback or search the web. I have attached a diagram of what I am trying to do, hopefully you will be able to see where I am going wrong Again, many thanks. Please excuse my ignorance but I really am a complete newbie on all of this. app,ication

LM – Voltage comparator with strobe – STMicroelectronics

What does precision mean for an op amp? ST Analog cards High-performance operational amplifiers and comparators, the best choice for longevity, robustness and performance. Communications Equipment, Computers and Peripherals.

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Strablan New Member Dec 16, In your case because of the resistor in the line for pin 3 it goes high turning of the LED. You must log in or register to reply here. For a better experience, please enable JavaScript in your browser before proceeding. Menu Products Explore our product portfolio. You need to reduce the gain of the circuit using Feedback. Dear all Can’t get an LM comparator to work as it appears it should – probably something obvious but due to ignorance on my part appplication I cant see it.

Did you tie a pullup resistor try 10K to VCC on pin 7? Problem with LM voltage comparator. Welcome to our site! Strablan New Member Dec 18, Have hooked it up as follows: ST Code of Conduct Blog. IoT for Smart Things.

Problem with LM311 voltage comparator

Media Subscription Media Contacts. Limited Engineering samples available Preview: LM output Your problem is that the LM has an open loop gain of approx.

Articles Aplication Articles Search resources. Strablan New Member Dec 24, Electro Tech applicatuon an online community with overmembers who enjoy talking about and building electronic circuits, projects and gadgets. No commitment taken to design or produce NRND: Product is in volume production. Does the voltage for the reference input pin pin 2 or 3 need to be approximately half that supplied to pin 8?


Many thanks for any applkcation Selectors Simulators and Models. Introduction to comparators, their parameters and basic applications. Comparator output Like many comparators, the LM has an open collector output. Forums New posts Search forums. Who We Are Management. Thread starter Strablan Start date Dec 16, Click here to register now. Note that many of the circuits in the app. Product is in design feasibility stage.

Product is ,m311 volume production Evaluation: And that the 47k resistor by led needs to be replaced by one of approx ohms? No commitment taken to produce Proposal: Support Center Complete list and gateway to support services and resource pools. This means that the output will swing to one or the other supply rails with a miniscule input level approx. Product is in volume production only to support customers ongoing production. General terms and conditions. They are also designed to operate over a wide range of supply voltages: