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Quad-Channel Isolators from Analog Devices feature Integrated DC-to-DC converter, samples and evaluation board available from Anglia

The ADuM642xA family from Analog Devices are quad-channel digital isolators with an isoPower®, integrated, isolated dc-to-dc converter.

The ADuM642xA family of quad-channel isolators eliminate the need for a separate, isolated dc-to-dc converter in 500 mW, isolated designs, reducing design complexity and cost. Analog Devices 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.

Functional Block Diagram

Free Samples and Evaluation Board   
Key Features
  • isoPower integrated, isolated dc-to-dc converter
  • 100 mA output supply
  • AEC-Q100 qualified for automotive applications ADuM6421AW (ADuM6423AW pending)
  • Meets CISPR 32/EN55032 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
  • CQC certification per GB4943.1-2011 (pending)
Data

All devices in the family include the same isolated dc-to-dc converter and are differentiated by directional digital channel configurations. The devices are available with popular 5V and 3.3V voltage and associated output current levels as listed in the table below.

ADuM642x voltage and output current combinations

VDDP (V) VISO (V) ISO Current, IISO (mA)
85°C 105°C 125°C
5 5 100 65 30
5 3.3 100 65 30
3.3 3.3 60 60 20

Based on the Analog Devices iCoupler® technology, the integrated 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. This is demonstrated in the measurements below taken from the EVAL-ADUM6421ARNZ and EVAL-ADUM6421AURNZ evaluation boards.

CISPR 32/EN 55032 Class B test results

The ADuM642xA family of isolators provide four independent isolation channels specified from DC to 100Mbps and have high common-mode transient immunity of 100kV/µs. The devices are available in 28 lead SOIC package and have a specified operating temperature range from -40°C to +125C

Evaluation Board

The ADuM642xA family of quad-channel isolators are supported by the EVAL-ADUM6421ARNZ and EVAL-ADUM6421AURNZ evaluation boards. The EVAL-ADUM6421ARNZ includes the ADuM6421ABRNZ5 quad-channel digital isolator with integrated, isolated dc-to-dc converter. Alternatively, the EVAL-ADUM6421AURNZ leaves the isolator position unpopulated to support evaluation of the ADuM6420A, ADuM6421A, ADuM6422A, ADuM6423A, or ADuM6424A. Full specifications for the ADuM642xA family is available in the data sheet, which must be consulted in conjunction with the user guide when using the evaluation boards. The ADuM642xA family of devices can provide regulated, isolated power that meets CISPR 32/EN 55032, Class B limits at full load on a 2-layer printed circuit board (PCB) with ferrite beads, the evaluation boards have been designed to fully demonstrate this capability. The radiated emissions test plots for the evaluation boards are provided in Figure 4 and Figure 5 of the data sheet.

The ADuM642x family are ideal for a wide range of applications including RS-232 transceivers, Power supply start-up bias and gate drives, Isolated sensor interfaces, Automotive on-board charger (OBC) and Industrial programmable logic controllers (PLCs).

Anglia are offering customers a FREE evaluation board and samples of the ADuM642xA quad-channel isolators with integrated dc-to-dc converter from Analog Devices, please fill in the form below to register your interest now.

To register for a FREE evaluation board and samples of the ADuM642xA quad-channel isolators with integrated dc-to-dc converter from Analog Devices, please fill in the form below

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FREE samples for UK and Ireland customers only, subject to availability.

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