SLVUDQ1 May   2026

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1  AC-MB Settings
      1. 2.1.1 Audio Serial Interface Settings
      2. 2.1.2 USB Control
      3. 2.1.3 External Control
    2. 2.2  AC-MB Power Supply
    3. 2.3  Default Jumper Settings on TAS2573EVM
    4. 2.4  I2C Target Address Selection
    5. 2.5  IOVDD and VDD Power Supply Options on EVM
    6. 2.6  VBAT Power Supply for TAS2573 on EVM
      1. 2.6.1 VBAT 2S EVM Hardware Configuration
      2. 2.6.2 VBAT 3S (External PVDD) EVM Hardware Configuration
    7. 2.7  Speaker Outputs
    8. 2.8  1-Channel Configuration
    9. 2.9  4-Channel Configuration
    10. 2.10 4-Wire Measurement of Load
    11. 2.11 Jumper Settings Quick Reference
  8. 3Hardware Design Files
    1. 3.1 Schematics
    2. 3.2 PCB Layouts
    3. 3.3 Bill of Materials (BOM)
  9. 4Additional Information
    1. 4.1 Known Issues
    2. 4.2 Troubleshooting
    3.     Trademarks

2.10 4-Wire Measurement of Load

TAS2573EVM has been designed such that the dummy load or speaker load connected to the device can be measured very accurately directly from the device pin including board parasitic and connector contact resistance using 4-wire method in digital multimeter. Pin headers have been provided to be able to connect digital multimeter in 4-wire mode as shown in Figure 2-12.

For channel-1: Connect HI of DMM to pin-1 and HI_SNS of DMM to pin-2 of TP13 test point.

Connect LO of DMM to pin-2 and LO_SNS of DMM to pin-1 of TP15 test point.

For channel-2: Connect HI of DMM to pin-1 and HI_SNS of DMM to pin-2 of TP28 test point.

Connect LO of DMM to pin-2 and LO_SNS of DMM to pin-1 of TP30 test point.

TAS2573EVM Load DC Resistance Measurement in 4-Wire Mode Using Digital Multimeter Figure 2-12 Load DC Resistance Measurement in 4-Wire Mode Using Digital Multimeter