ADUM4154

PRODUCTION

5 kV, 7-Channel, SPIsolator Multiple Peripheral, Digital Isolator for SPI

Data Sheet (Rev. D) Product Selection Table
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Overview

  • Supports up to 17 MHz SPI clock speed
  • 4 high speed, low propagation delay, SPI signal isolation channels
  • Supports up to 4 peripheral devices
  • 20-lead SOIC_IC package with 8.3 mm creepage
  • High temperature operation: 125°C
  • High common-mode transient immunity: >25 kV/μs
  • Safety and regulatory approvals
    • UL 1577
      • VISO = 5000 V rms for 1 minute
    • IEC/EN/CSA 62368-1
    • IEC/CSA 60601-1
    • IEC/CSA 61010-1
    • DIN EN IEC 60747-17 (VDE 0884-17)
      • VIORM = 645 V peak

The ADuM41541 is an SPIsolator™ digital isolator optimized for a serial peripheral interface (SPI) that includes support for up to four peripheral devices. Based on the Analog Devices, Inc., iCoupler® chip scale transformer technology, the low propagation delay and jitter in the CLK, MO/SI, MI/SO, and SS SPI bus signals support SPI clock rates of up to 17 MHz.

The ADuM4154 isolator also provides a peripheral select multiplexing system that allows up to four peripheral devices to be serviced from one isolator. When a target peripheral is selected, the peripheral select signal propagates to the desired output with low propagation delay, allowing tight timing control. The isolated SSx is addressed through a 250 kbps low speed, 2-channel address bus, allowing the target peripheral device to be changed in as little as 2.5 μs.

Applications

  • Industrial programmable logic controllers (PLCs)
  • Sensor isolation

 
ADUM4154
5 kV, 7-Channel, SPIsolator Multiple Peripheral, Digital Isolator for SPI
ADuM4154 Functional Block Diagram ADuM4154 Pin Diagram
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Documentation

Data Sheet 1

Safety and Regulatory Compliance 1

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Tools & Simulations

IBIS Model 1

Evaluation Kits

eval board
schematic 1
EVAL-ADUM3154

ADUM3154/ADUM4154 Evaluation Board

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Features and Benefits

  • Access to all four data channels
  • Access to the slave select address lines
  • Access to the DCLK delayed clock
  • Multiple connection options
  • Support for Tektronix active probes
  • Provision for cable terminations
  • Support for PCB edge-mounted coaxial connectors
  • Easy configuration
  • Installed SPIsolator® digital isolator: ADuM3154BRSZ in the 20-lead SSOP package

Product Details

The EVAL-ADuM3154Z supports the ADuM3154ARSZ, ADuM3154BRSZ, ADuM4154ARIZ and ADuM4154BRIZ, which are, 4-channel SPIsolator isolators optimized for use in SPI applications. They include two low speed address pins to rout the slave select to one of four destinations. The evaluation board provides a JEDEC standard 20-lead SSOP pad layout, support for signal distribution, loopback, and loads referenced to VDDx or GNDx, as well as optimal bypass capacitance. Signal sources 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.

Supported SPIsolator Models
  • ADuM3154ARSZ
  • ADuM3154BRSZ
  • ADuM4154ARIZ
  • ADuM4154BRIZ
EVAL-ADUM3154
ADUM3154/ADUM4154 Evaluation Board

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