ISO722XEVM Datasheet, PDF (1/12 Pages) Texas Instruments – Dual-Channel Digital Isolator EVM

User's Guide
SLLU098D – June 2007 – Revised July 2013
Dual-Channel Digital Isolator EVM
Contents
1 Introduction .................................................................................................................. 1
1.1 Overview ............................................................................................................ 2
1.2 Functional Configuration of the Dual-Channel Digital Isolator ............................................... 2
1.3 The EVM Signal Paths of the ISO7220x, ISO7221x, and ISO742x Isolators .............................. 3
1.4 The ISO7220x and ISO7420x EVM Configuration ............................................................ 5
1.5 The ISO7221x and ISO7421x EVM Configuration ............................................................ 6
2 EVM Setup and Operation ................................................................................................. 7
2.1 Overview ............................................................................................................ 7
List of Figures
1 The ISO7x20x and ISO7x21x Pinouts ................................................................................... 2
2 The ISO7x20x Same-Channel Direction Schematic ................................................................... 3
3 The ISO7x21x Opposing-Channel Direction Schematic ............................................................... 4
4 ISO7220x and ISO7420x EVM, Top View .............................................................................. 5
5 ISO7220x and ISO7420x EVM, Bottom View .......................................................................... 5
6 The ISO7221x and ISO7421x EVM Top View .......................................................................... 6
7 The ISO7221x and ISO7421x EVM Bottom View ...................................................................... 6
8 Basic EVM Operation....................................................................................................... 7
9 Typical Input and Output Waveforms .................................................................................... 7
List of Tables
1 ISO7220x and ISO7420x EVM Connections ............................................................................ 3
2 ISO7221x and ISO7421x EVM Connections ............................................................................ 4
1 Introduction
This user's guide details the evaluation module (EVM) operation of the factory installed ISO7421 dual-
channel digital isolator; however, the EVM board may be reconfigured by a user for use with ISO7220A,
ISO7220B, ISO7220C, ISO7220M, ISO7420, ISO7420M, ISO7420F, or ISO7420FCC same-channel
direction isolators and the ISO7221A, ISO7221B, ISO7221C, ISO7221M, ISO7421, ISO7421M or
ISO7421F 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.
SLLU098D – June 2007 – Revised July 2013
Dual-Channel Digital Isolator EVM
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