CA3290 Datasheet - Intersil

CA3290 BiMOS Dual Voltage Comparators

The Basic Comparator Figure 4 shows the basic circuit diagram for one of the two comparators in the CA3290. It is generically similar to the industry type “139” comparators, with PMOS transistors replacing PNP transistors as input stage elements. Transistors Q1 through Q4 comprise the differential i.

CA3290, CA3290A Data Sheet September 1998 File Number 1049.3 BiMOS Dual Voltage Comparators with MOSFET Input, Bipolar Output The CA3290A and CA3290 types consist of a dual voltage comparator on a single monolithic chip. The common mode input voltage range includes ground even when operated from a single supply. The low supply current drain makes these comparators suitable for battery operation; their extremely low input currents allow their use in applications that employ sensors with extremel.

CA3290_Intersil.pdf