ADUM7642

PRODUCTION

1 kV RMS Six-Channel Digital Isolators (4/2 Channel Directionality)

Data Sheet (Rev. A) Product Selection Table
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Overview

  • Small 20-lead QSOP
  • 1000 V rms isolation rating
  • Safety and regulatory approvals:
    • UL 1577
      • VISO = 1000 V rms for 1 minute
  • Low power operation
    • 3.3 V operation
      • 1.6 mA per channel maximum at 0 Mbps to 1 Mbps
      • 7.8 mA per channel maximum at 25 Mbps
    • 5 V operation
      • 2.2 mA per channel maximum at 0 Mbps to 1 Mbps
      • 11.2 mA per channel maximum at 25 Mbps
  • Bidirectional communication
  • Up to 25 Mbps data rate (NRZ)
  • 3 V/5 V level translation
  • High temperature operation: 105°C
  • High common-mode transient immunity: >15 kV/μs

The ADuM7640 / ADuM7641 / ADuM7642 / ADuM7643 are 6-channel digital isolators based on the Analog Devices, Inc., iCoupler® technology. These 1 kV digital isolation devices are packaged in a small 20-lead QSOP. They offer space savings and a lower price than 2.5 kV or 5 kV isolation solutions when only functional isolation is needed.

This family, like many Analog Devices isolators, offers very low power consumption, using one-tenth to one-sixth the power of other digital isolators, with the supply voltage on either side ranging from 3.0 V to 5.5 V. Despite their low power consumption, the ADuM7640 / ADuM7641 / ADuM7642 / ADuM7643 provide low pulse width distortion (< 6 ns for C grade) and a channel- by-channel glitch filter to protect the device against extraneous noise disturbances. Four channel direction combinations are available with a maximum data rate of 1 Mbps or 25 Mbps. All products have a default output high logic state in the absence of input power.

Applications

  • General-purpose, multichannel isolation
  • SPI interface/data converter isolation
  • RS-232/RS-422/RS-485 transceivers
  • Industrial field bus isolation
ADUM7642
1 kV RMS Six-Channel Digital Isolators (4/2 Channel Directionality)
ADuM7642 Functional Block Diagram ADuM7642 Pin Configuration
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Documentation

Data Sheet 1

User Guide 1

Safety and Regulatory Compliance 1

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Hardware Ecosystem

Parts Product Life Cycle Description
ADuM162N
RECOMMENDED FOR NEW DESIGNS Robust 3.0 kV rms Six Channel Digital Isolators w/ Fail-Safe & 2 Reverse Channels
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Evaluation Kits

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EVAL-ADUM7641

ADUM7641 Evaluation Board

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Product Details

The EVAL-ADuM7643EBZ supports the ADuM7640, ADuM7641, ADuM7642, and ADuM7643, which are 1 kV, 6-channel iCoupler® isolators. The evaluation board provides a JEDEC standard 20-lead QSOP pad layout, support for signal fanout, and loopback as well as optimal bypass capacitance. Signals can be wired onto the board as well as brought onto the board through edge-mounted SMA connectors (sold separately) or terminal blocks for power connections. The board includes 200 mil header positions for compatibility with Tektronix active probes.

The board follows best printed circuit board (PCB) design practices for 4-layer boards, including a full power and ground plane on each side of the isolation barrier. No other EMI or noise mitigation design features are included on this board. In cases of very high speed operation or when ultralow emissions are required, refer to the AN-1109 application note for additional board layout techniques.
EVAL-ADUM7641
ADUM7641 Evaluation Board
ADUM7643 Evaluation Board ADUM7643 Evaluation Board - Bottom View ADUM7643 Evaluation Board - Top View

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