What is Comparator?
A circuit that compares two input voltages and outputs the result as a binary high or low. It is also a basic building block of AD converters.
Comparator in the explanations
A comparator decides which of two input voltages is larger and outputs a binary high or low.
What does a comparator do?It is made by adding positive feedback to a comparator and is also available as logic ICs such as the 74HC14.
Which circuit has different thresholds for rising and falli…An N-bit conversion takes N comparisons and needs only one comparator.
Which correctly describes the operation of a successive-app…
Questions that mention Comparator (7)
- What does a comparator do?
- Which circuit has different thresholds for rising and falling inputs and prevents the output from chattering due to noise?
- Which correctly describes the operation of a successive-approximation (SAR) AD converter?
- Which AD converter splits conversion into several stages processed like an assembly line, combining high speed with medium to high resolution?
- In the transfer characteristic of an AD converter, what is the error called when the output deviates from 0 at zero input?
- How many comparators does a 3-bit flash AD converter need?
- What is the main advantage of the scheme used in many CMOS image sensors in which each pixel column has its own AD converter for parallel conversion?
Related terms
Operational amplifier (op-amp) Negative feedback Schmitt trigger Microcontroller Oversampling Pipelined ADC INL (integral nonlinearity) DNL (differential nonlinearity) Flash ADC CMOS