Texas Instruments ISO7220 Series, User Manual

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1 Introduction
User's Guide
SLLU098A – June 2007 – Revised July 2009
Dual-Channel Digital Isolator EVM
Contents
1 Introduction
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1
1.1 Overview
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2
1.2 Functional Configuration of the Dual-Channel Digital Isolator
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1.3 The EVM Signal Paths of the ISO7220x and ISO7221x Isolators
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1.4 The ISO7220x EVM Configuration
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1.5 The ISO7221x EVM Configuration
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2 EVM Setup and Operation
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2.1 Overview
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List of Figures
1 The ISO7220x and ISO7221x Pinouts
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2 The ISO7220x Same-Channel Direction Schematic
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3 The ISO7221x Opposing-Channel Direction Schematic
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4 ISO7220x EVM, Top View
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5 ISO7220x EVM, Bottom View
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6 The ISO7221x EVM Top View
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7 The ISO7221x EVM Bottom View
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8 Basic EVM Operation
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9 Typical Input and Output Waveforms
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List of Tables
1 ISO7220x EVM Connections
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2 ISO7221x EVM Connections
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This user's guide details the evaluation module (EVM) operation of the factory installed ISO7220M
dual-channel digital isolator. However, the EVM board may be reconfigured by a user for use with any of
the ISO7220x or ISO7221x dual-channel isolators.
The EVM may be reconfigured for use with the ISO7220A, ISO7220B and ISO7220C same-channel
direction isolators and the ISO7221A, ISO7221A, ISO7221C and ISO7221M opposing-channel direction
isolators.
This guide also explains the user configurable I/O loads for both dual-channel isolator EVM configurations,
and presents a typical lab setup with input and output waveforms.
SLLU098A – June 2007 – Revised July 2009 Dual-Channel Digital Isolator EVM 1
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