https://www.electronics-tutorials.ws/opamp/op-amp-comparator.html
Op-amp Comparator. The comparator is an electronic decision making circuit that makes use of an operational amplifiers very high gain in its open-loop state, that is, there is no feedback resistor. The Op-amp comparator compares one analogue voltage level with another analogue voltage level, or some preset reference voltage, V REF and produces

https://ocw.mit.edu/courses/6-071j-introduction-to-electronics-signals-and-measurement-spring-2006/b713e408ddb359fd729360244e747aff_24_op_amps3.pdf
The basic comparator circuit is an op-amp arranged in the open-loop configuration as shown on the circuit of Figure 1. The op-amp is characterized by an open-loop gain A and let's assume that the output voltage Vo can go all the way to VDD and VEE. The output voltage is given by. Vo = A ( V −V ) + −.

https://www.circuitbread.com/tutorials/how-an-op-amp-comparator-works
With an op-amp, the output amplifies the difference between the two inputs. If the voltage on the non-inverting input is higher than the voltage on the inverting input, the output will create a positive voltage that amplifies the difference in input voltages. Ideally, that amplification factor is infinite, though real op-amps obviously are not

https://eng.libretexts.org/Bookshelves/Electrical_Engineering/Electronics/Operational_Amplifiers_and_Linear_Integrated_Circuits_-_Theory_and_Application_(Fiore)/02%3A_Operational_Amplifier_Internals/2.03%3A_Simple_Op_Amp_Comparator
Figure 2.3.1 2.3. 1: Comparator (single input). The op amp cannot produce 20,000 V. The data sheet lists a maximum output swing of only ± ± 13.5 V when using ± ± 15 V supplies. The output will be truncated at 13.5 V. If the input signal is reduced to only 1 mV, the output will still be clipped at 13.5 V.

https://www.mouser.com/pdfDocs/opamp_comparator_tutorial_appli-e-2.pdf
Operational amplifier ,Comparator (Tutorial) This application note explains the general terms and basic techniques that are necessary for configuring application circuits with op-amps and comparators. Refer to this note for guidance when using op-amps and comparators. a.

https://www.youtube.com/watch?v=zNAbcUSptWE
Operational amplifiers and comparators are sometimes used interchangeably and, while they are different, an op-amp can be setup as a comparator. Understandi

https://www.elprocus.com/op-amp-as-comparator-circuit-and-working/
When we look closely at the comparator symbol, we will recognize it as the Op-Amp (Operational Amplifier) symbol, so what makes this comparator differ from op-amp; Op-Amp is designed to accept the analog signals and output the analog signal, whereas the comparator will only give output as a digital signal; although an ordinary Op-Amp could be used as the Comparators (Operational Amplifiers

https://www.circuitstoday.com/op-amp-comparator
A non-inverting 741 IC op-amp comparator circuit is shown in the figure below. It is called a non-inverting comparator circuit as the sinusoidal input signal Vin is applied to the non-inverting terminal. The fixed reference voltage Vref is give to the inverting terminal (-) of the op-amp. When the value of the input voltage Vin is greater than

https://www.allaboutcircuits.com/video-tutorials/op-amp-voltage-comparator-circuit/
Comparator operation occurs as a natural result of the op-amp's extremely high gain. As shown in the diagram below, the full gain (A OL) is applied to the difference between the voltage at the non-inverting input terminal and the voltage at the inverting input terminal. V OU T = AOL ×(V IN + −V IN −) = AOL ×V DIF F V O U T = A O L ×

https://toshiba.semicon-storage.com/info/application_note_en_20210326_AKX00142.pdf?did=67529
Toshiba Electronic Devices & Storage Corporation. Basics of Operational Amplifiers and Comparators. Outline: Op-amps, also known as operational amplifiers, are used for voltage amplifiers, filters, phase shifts, and more. The comparator, also known as a voltage comparator, has a function to detect the high or low voltage with respect to the

https://electronicsreference.com/analog/op_amps/comparator/
Op Amp Comparator. An op amp comparator is a circuit that uses an operational amplifier to compare two voltages. It functions by comparing two voltages and outputting a high or low signal. One of the most important uses of the comparator is in analog to digital conversion. The inputs to the comparator can be any value, but the output is

https://eng.libretexts.org/Bookshelves/Electrical_Engineering/Electronics/Laboratory_Manual%3A__Operational_Amplifiers_and_Linear_Integrated_Circuits_3e_(Fiore)/03%3A_The_Op_Amp_Comparator
Objective. In this exercise, the performance of a typical op amp will be examined in the open-loop mode. This circuit is often referred to as a comparator. The investigation will include the effect of both DC and AC input signals. In this exercise, the performance of a typical op amp will be examined in the open-loop mode.

https://www.allaboutcircuits.com/video-lectures/op-amp-voltage-comparator/
Voltage Comparator. A voltage comparator has two analog input and one digital output, so if we looked at our op amp, we would have an input here, an input here, and we would have an output. The output will be a digital output, it will need to be a high or a low, and there will be nothing in between. The larger input will determine the output's

https://electronics.stackexchange.com/questions/334742/how-to-design-a-comparator-using-op-amp
Intention is to design a comparator with following specification: Input: 0V to 1.65V, Output: Low. Input: 2.1V to 5V, Output: High. This is the TI design doc I have refereed for the design.. Please see the circuit diagram for your reference: (Highlighted in green rectangle)

http://www.learningaboutelectronics.com/Articles/LM741-op-amp-comparator.php
The LM741 is an operational amplifier IC that can function as a comparator. It is an op amp chip that has 8 pins in total. If you want a complete understanding of what each pin is and what each pin does, see . The only pins we will use for our comparator circuit are 5 of the pins, V+, V-, inverting input, noninverting input, and output.

https://www.analog.com/en/resources/technical-articles/selecting-the-right-comparator.html
The MAX9013 is an improved plug-in replacement for the industry-standard MAX913 and LT1016/LT1116. The dual comparator, MAX9107, is offered in a space-saving 8-pin SOT23 package. The single comparator, MAX9109, is available in a tiny 6-pin SC70, while the quad comparator, MAX9108, is offered in a 14-pin TSSOP.

https://www.allaboutcircuits.com/industry-articles/using-operational-amplifiers-as-comparators/
It's possible to simplify the procedure for designing an op-amp as a comparator into two design steps: Set the threshold voltage using a resistor divider or reference voltage. Select an op-amp that meets all of the design requirements discussed here. Figure 8 shows the TLV9062 configured as an inverting comparator.

https://circuitcellar.com/resources/ee-tips/op-amp-versus-comparator-ee-tip-128/
The idea behind the comparator configuration is simple. An op-amp has a very high open-loop DC gain which means that even a tiny differential input voltage will drive the output to one extreme or the other. If the voltage at the non-inverting ("+") input is greater than that at the inverting ("-") input the output goes high; otherwise

https://www.analog.com/en/resources/analog-dialogue/articles/amplifiers-as-comparators.html
Comparators have a variety of uses, including: polarity identification, 1-bit analog-to-digital conversion, switch driving, square/triangular-wave generation, and pulse-edge generation. In principle, any high-gain amplifier can be used to perform this simple decision. But "the devil is in the details.". So there are some basic differences

https://electronics.stackexchange.com/questions/536436/comparator-as-operational-amplifier
2. Comparators might also have built in hystersis and open collector outputs. @DKNguyen the MAX999 is a prime example. Some comparators need output pull-up resistors too like the LM339. My internal hysteresis will be more or less the equivalent to the input offset voltage of an opa as my feedback need to be higher/lower than V+ and that

https://electronics.stackexchange.com/questions/480547/comparator-with-hysteresis-calculation
I'm trying to calculate the hysteresis of the comparator using currents but something isn't right. I'd like a little help to find the hysteresis thresholds without the simplified equations. simulate