Digital Comparators
A digital comparator is a circuit that outputs the result of comparing two voltages. This circuit compares the signal compared with the reference signal, and outputs signals corresponding to the low and high signals. In many cases, the voltage is compared, but there are also cases where temperature, humidity, etc. are handled. The digital comparator consists of five terminals: plus and minus input terminals, plus and minus power supply terminals, and output terminals. It features high responsiveness because there is no phase compensation capacitance. There are two types of comparator output terminals: open collector type and push-pull type. An open collector consists of a single transistor, and the output current flows in or out. On the other hand, the push-pull type consists of two transistors, and the output current corresponds to both inflow and outflow.