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Freebase(0.00 / 0 votes)Rate this definition: Comparator. In electronics, a comparator is a device that compares two voltages or currents and switches its output to indicate which is larger. They are commonly used in devices such as analog-to-digital converters.
Therefore for a comparator that is slew rate limited we have, tp = T = V SR = VOH- VOL 2Â·SR where SR = slew rate of the comparator. If SR < |maximum slope|, then the comparator is slewing. Chapter 8 â Section 1 (8/7/06) Page 8.1-13. CMOS Analog Circuit Design Â© P.E. Allen - 2006 Example 8.1-1 - Propagation Delay Time of a Comparator Find the propagation delay time of an open loop comparator that has a dominant pole at 103 radians/sec, a dc gain of 104, a slew rate of 1V/Î¼s, and a binary output voltage swing of 1V. Assume the applied input voltage is 10mV. Solution The input resolution for this comparator is 1V/104 or 0