ADUM5402WCRWZ-1 UART Interface IC Digital Isolators 4.5-5.5 V DC 10 Mbit/s4chnl w/isopwr
uart multiplexer ic
,uart level shifter ic
ADUM5402WCRWZ-1 UART Interface IC Digital Isolators 4.5-5.5 V DC 10 Mbit/s4chnl w/isopwr
FEATURES
- Power integrated, isolated dc-to-dc converter Regulated 3.3 V or 5.0 V output
- Up to 500 mW output power
- Quad dc-to-25 Mbps (NRZ) signal isolation channels 16-lead SOIC package with 7.6 mm creepage
- High temperature operation: 105°C maximum
- High common-mode transient immunity: >25 kV/μs Safety and regulatory approvals
- UL recognition
- 2500 V rms for 1 minute per UL 1577
- CSA Component Acceptance Notice #5A VDE certificate of conformity (pending)
- IEC 60747-5-2 (VDE 0884, Part 2) VIORM = 560 V peak
APPLICATIONS
- RS-232/RS-422/RS-485 transceivers Industrial field bus isolation
- Power supply start-up bias and gate drives Isolated sensor interfaces
- Industrial PLCs
GENERAL DESCRIPTION
The ADuM5401/ADuM5402/ADuM5403/ADuM54041 are quad-channel digital isolators with isoPower®, an integrated, isolated dc-to-dc converter. Based on the Analog Devices, Inc., iCoupler® technology, the dc-to-dc converter provides up to
500 mW of regulated, isolated power at either 5.0 V or 3.3 V from a 5.0 V input supply, or at 3.3 V from a 3.3 V supply at the power levels shown in Table 1. These devices eliminate the need for a separate, isolated dc-to-dc converter in low power, isolated designs. The iCoupler chip scale transformer technology is used to isolate the logic signals and for the power and feedback paths in the dc-to-dc converter. The result is a small form factor, total isolation solution.
The ADuM5401/ADuM5402/ADuM5403/ADuM5404 isolators provide four independent isolation channels in a variety of channel configurations and data rates (see the Ordering Guide for more information).
isoPower uses high frequency switching elements to transfer power through its transformer. Special care must be taken during printed circuit board (PCB) layout to meet emissions standards. See the AN-0971 Application Note for board layout recommendations.
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