The World Leader in High Performance Signal Processing Solutions

Dedicated DigitalIsolator for SPI Communications

Based on iCoupler® Digital Isolator Technology

www.analog.com/SPIsolator

June 2014

®

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ADI has your SPI Bus Covered with a New Portfolio of SPI Digital Isolators

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Dedicated SPI IsolatorsSmall Footprint, Simple Design, Fast Speed, High Data Integrity Small Package

20-lead SSOP with 3.75kV Isolation rating

Multiple Slave Control Options

High Speed (Up to 40MHz) Low Propagation Delay

Extended Temperature Range to 125°C

Proven iCoupler Isolation (>1 Billion Channels Shipped)UL, CSA, VDE regulatory approvals (Pending)

Serves Variety of ApplicationsControl (PLC, Automotive, etc.)

High Data Integrity; Multiple Slaves; Auxiliary Data LinesSensor Monitoring (Instrumentation, Motor Control, etc.)

High Data Rates; Tight Timing Control; Single Slave; Auxiliary Data Lines

www.analog.com/SPIsolator

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Optocoupler to SPIsolator MigrationiCoupler SolutionOptocoupler Solution

Optocoupler SPIsolator

Components 33 3

Area 816 mm2 108 mm2

Cost $16.11 $2.80

(10K OEM pricing)3.75 kVrms Withstand

17Mhz

www.analog.com/SPIsolator

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Digital Isolator to SPIsolator MigrationiCoupler SolutionDigital + Opto Solution

Digital + Opto SPIsolator

Components 18 3

Area 595 mm2 108 mm2

Cost $4.83 $2.80

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(10K OEM pricing)3.75 kVrms Withstand

17Mhz

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ADuM315x Block Diagrams

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Common Low-Latency, High Speed SPI Path

Different Integrated Low-Speed

Channel Configurations

Retimed Clock

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ADuM3150 SPI Digital IsolatorEnables High Bus Speed

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Supports up to 40MHz SPI Clock Delayed SCLK generated by SPIsolator based on SCLK

Factory calibrated Requires additional MCU register

Standard SPI port or GPIOs + shift registerFastest systems today perform this function discretely

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ADuM3151/2/3 SPI Digital IsolatorFunctional Integration Reduces Size and Cost

Supports 17MHz Clock3 Auxiliary Low-Speed ChannelsIntegrates isolation of auxiliary/control signals

www.analog.com/SPIsolator

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ADuM3154 SPI Digital IsolatorQuad Slave Select Feature Simplifies Board Layout

Supports 17MHz Clock4 Slave Select Lines

2 Pins to Address the Slave Select Mux on Slave SideSlave Select gated by fast SS channel for accurate timing

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SPIsolator™ Selection Guide

ADuM315x released now! ADuM415x to be released in September.

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Compatible with All SPI Converters

For more information on our precision converter products, visit: www.analog.com/adc

ADC ModelResolution

(Bits)

ADCSample Rate

(Msps)

SPIsolator Throughput

(Msps)

AD7984 18 1.33 1.05AD7982 18 1.00 0.86AD7690 18 0.40 0.39AD7691* 18 0.25 0.25AD7983 16 1.33 1.11AD7980 16 1.00 0.90AD7902 16 1.00 0.90AD7903 16 1.00 0.90AD7693* 16 0.50 0.50AD7699* 16 0.50 0.50

AD7606-4* 16 0.20 0.20AD7091R* 12 1.00 1.00

AD7091R-2* 12 1.00 1.00AD7091R-4* 12 1.00 1.00AD7091R-8* 12 1.00 1.00

Here are the latest 12-bit to 18-bit Precision ADCs

* Maximum ADC Throughput Supported

SPIsolator™ Family Resourceswww.analog.com/SPIsolator

Training Video

Evaluation Boards EVAL-ADUM3150ZEVAL-ADUM3151ZEVAL-ADUM3154Z

Product Data Sheets•ADuM3150•ADuM3151/2/3•ADuM3154

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• Access to all data channels

• Multiple Connection Options

• Support for Tektronix Active Probes

• Provision for cable terminations

• Support for PCB edge mounted coax connectors

• Easy Configuration

Evaluate for $49 USD

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Learn More About iCoupler Digital Isolatorswww.analog.com/iCoupler

Resources Include: Webcast and Training videos Interface and Isolation Newsletter Archives and Subscription Link Circuits from the Lab™ Application Notes Technical Articles Digital Isolator Product Selector Guide Regulatory Agency Certifications Datasheets Evaluation Boards

And Much More!

www.analog.com/SPIsolator