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About Digital Comparators
Digital comparators are integrated circuits (ICs) that compare the magnitude of two binary quantities and determine the relationship of those quantities. There are two basic types of digital comparators: identity comparators and magnitude comparators. Identity comparators indicate whether two inputs are equal. Magnitude comparators indicate whether two inputs are equal and, if they are not, which input is larger or smaller. Typically, digital comparators are used to compare an input voltage to a reference voltage. Logic circuits that incorporate multiple individual comparators are able to characterize large groups of input signals. Digital comparators may be operated in synchrony with a clock or asynchronously, incorporating sufficient gain to force the output signal into saturation.
Digital comparators vary in terms of supply voltage, number of bits, propagation delay, operating current, and operating temperature. Supply voltages range from - 5 V to 5 V and include intermediate voltages such as -4.5 V, -3.3 V, -3 V, 1.2 V, 1.5 V, 1.8 V, 2.5 V, 3 V, 3.3 V, and 3.6 V. The number of bits is the size of the binary numbers that a digital comparator can process so that, for example, a 4-bit comparator accepts two input numbers, each with four bits. The propagation delay is the time interval between the application of an input signal and the occurrence of the corresponding output. Like other ICs, digital comparators require a minimum current for active operation and feature a range of operating temperatures. Some digital comparators are radiation-tolerant. Others provide protection against electrostatic discharge (ESD).
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Engineering Web: Digital Comparators
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Analog Devices, Inc. | Converters Amplifiers Processors... Amplifiers and Comparators Analog Microcontrollers Analog to Digital Converters Audio/Video Products See Analog Devices, Inc. Information |
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Analog-to-digital converter - Wikipedia, the free encyclopedia An analog-to-digital converter (abbreviated ADC, A/D or A to D) is a device which converts continuous signals to discrete digital numbers. |
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Digital Logic Course Resources Digital Logic Curriculum Resources Related Information See Xilinx, Inc. Information |
