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Overview
Features and Benefits
- isoPower integrated, isolated dc-to-dc converter
- 100 mA output supply
- Meets CISPR 32/EN550 32 Class B emission limits up to 5 Mbps at a full load on a 2-layer PCB
- Quad dc to 100 Mbps signal isolation channels
- 28-lead, fine pitch, SOIC with 8.3 mm minimum creepage
- High temperature operation: 125°C maximum
- High common-mode transient immunity: 100 kV/μs
- Safety and regulatory approvals (pending)
- UL recognition (pending)
- 5000 V rms for 1 minute per UL 1577
- CSA Component Acceptance Notice 5A (pending)
- VDE V 0884-11 certificate of conformity (pending)
- VIORM = 566 V peak
Product Details
The ADuM6420A/ADuM6421A/ADuM6422A1 are quad-channel digital isolators with an isoPower®, 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 eliminate the need for a separate, isolated dc-to-dc converter in 500 mW, isolated designs. The iCoupler 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 isolators provide four independent isolation channels. See the Pin Configurations and Function Descriptions in the data sheet for additional information.
APPLICATIONS
- RS-232 transceivers
- Power supply start-up bias and gate drives
- Isolated sensor interfaces
- Industrial programmable logic controllers (PLCs)
1 Protected by U.S. Patents 5,952,849; 6,873,065; 6,903,578; and 7,075,329. Other patents are pending.
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This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
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