TheADuM6420A/ADuM6421A/ADuM6422A/ADuM6423A/ADuM6424A1are quad-channel digital isolators with anisoPower®, integrated, isolated dc-to-dc converter. Based on the Analog Devices, Inc.,iCoupler®technology, the dc-to-dc converter provides regulated, isolated power that meets CISPR 32/EN 55032 Class B limits at a full load on a 2-layer printed circuit board (PCB) with ferrites. Popular voltage combinations and the associated output current levels are listed in Table 1 in the data sheet.The ADuM6420A/ADuM6421A/ADuM6422A/ADuM6423A/ADuM6424A eliminate the need for a separate, isolated dc-to-dc converter in 500 mW, isolated designs. TheiCoupler chip scale transformer technology is used for isolated logic signals and for the magnetic components of the dc-to-dc converter. The result is a small form factor, total isolation solution.The ADuM6420A/ADuM6421A/ADuM6422A/ADuM6423A/ADuM6424A isolators provide four independent isolation channels. See the Pin Configurations and Function Descriptions in the data sheet for additional information.APPLICATIONSRS-232 transceiversPower supply start-up bias and gate drivesIsolated sensor interfacesAutomotive on-board charger (OBC) and dc to dcIndustrial programmable logic controllers (PLCs)1Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329. Other patents are pending.