SLLU375 September   2024 ISO1228

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  6. 2Hardware
    1. 2.1 Pin Configuration of the ISO1228
    2. 2.2 EVM Board Block Diagram and Image
    3. 2.3 EVM Setup and Operation
      1. 2.3.1 EVM Jumper Settings
  7. 3Hardware Design Files
    1. 3.1 Schematics
    2. 3.2 PCB Layouts
    3. 3.3 Bill of Materials
  8. 4Additional Information
    1. 4.1 Trademarks

2.3 EVM Setup and Operation

This section describes the basic setup and operation of the EVM for performance evaluation. An example of one potential configuration for operating the ISO1228EVM is shown in Figure 2-3. In this setup, the digital input signal from the signal generator is connected between one of the INx pins and AVSS. The field side power supply is connected at AVCC and AVSS. The logic side power supply is connected at VCC1 and GND1. All output signals are monitored using an oscilloscope on the corresponding OUTx pin.

ISO228EVM Basic EVM OperationFigure 2-3 Basic EVM Operation
The ISO1228EVM has many do not populate (DNP) footprints for components which can be populated to apply different test conditions to the device. All possible test configurations that can be achieved by modifying different components of the EVM is shown in Table 2-1.
Table 2-1 Component Configurations
ComponentDescription
D1, D2, D3, D4, D5, D6, D7, D8Can be added for additional surge protection
C3, C4, C5, C6, C7, C8, C9, C10Can be added for additional filtering control on the input pins
R1, R2, R3, R4, R5, R6, R7, R8RTHR, Replace to modify voltage transition thresholds
R10, R11, R12, R13, R14, R15, R16, R17RPAR, Replace according to RILIM selection
R18RILIM, Replace to modify current limit drawn from each digital input
Sink/Source ModeThe EVM can be operated in sink, source, and sink/source mode without needing to modify any components.