SLAU944 August   2024 TAS2320

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Quick Start Guide
    1. 2.1 TAS2320EVM Setup for Software Mode
    2. 2.2 TAS2320EVM Setup for Hardware Mode
  9. 3Hardware
    1. 3.1  AC-MB Settings
      1. 3.1.1 Audio Serial Interface Settings
      2. 3.1.2 USB Audio AC-MB Settings
      3. 3.1.3 External Audio AC-MB Settings
    2. 3.2  AC-MB Power Supply
    3. 3.3  Default Jumper Setting on TAS2320EVM
    4. 3.4  I2C Target Address Selection
    5. 3.5  IOVDD Power Supply Options
    6. 3.6  AVDD Power Supply Options
    7. 3.7  VBAT Power Supply Options
    8. 3.8  PVDD Power Supply Options
    9. 3.9  IOVDD_BUFF Power Supply Options
    10. 3.10 Speaker Outputs
    11. 3.11 2-Channel Configuration
    12. 3.12 4-Wire Measurement of Load
  10. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials (BOM)
  11. 5Additional Information
    1. 5.1 Trademarks

3.12 4-Wire Measurement of Load

TAS2320EVM 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 header have been provided to be able to connect digital multimeter in 4-wire mode as shown in Figure 3-9.

Connect HI of DMM to pin-1 and HI_SNS of DMM to pin-2 of TP19 test point.

Connect LO of DMM to pin-2 and LO_SNS of DMM to pin-1 of TP20 test point.

TAS2320EVM Load DC Resistance Measurement in 4-Wire Mode using Digital Multimeter Figure 3-9 Load DC Resistance Measurement in 4-Wire Mode using Digital Multimeter