SBOU079D july   2009  – july 2023 INA220 , INA220-Q1

 

  1.   1
  2.   INA220 Evaluation Module
  3.   Trademarks
  4. 1Overview
    1. 1.1 INA220EVM Hardware
    2. 1.2 Related Documentation from Texas Instruments
    3. 1.3 Information About Cautions and Warnings
  5. 2System Setup
    1. 2.1 Theory of Operation for INA220_Test_Board Hardware
    2. 2.2 Signal Definitions of J1 (25-Pin Male DSUB)
    3. 2.3 Theory of Operation For USB_DIG_Platform
  6. 3INA220EVM (Rev A) Hardware Setup
    1. 3.1 Electrostatic Discharge Warning
    2. 3.2 Typical Hardware Connections
    3. 3.3 Connecting the Hardware
    4. 3.4 Connecting Power
    5. 3.5 Connecting the USB Cable to the INA220EVM
    6. 3.6 INA220 Jumper Settings
    7. 3.7 Connecting External Power to the INA220EVM
    8. 3.8 Connecting External Signals to the INA220EVM
  7. 4INA220 Software Overview
    1. 4.1 INA220EVM Software Install
    2. 4.2 Starting the INA220EVM Software
    3. 4.3 Using the INA220 Software
      1. 4.3.1 Overview Tab
      2. 4.3.2 Config Tab
      3. 4.3.3 Calibration Tab
      4. 4.3.4 Scaling Tab
      5. 4.3.5 Graph Tab
      6. 4.3.6 Registers Tab
      7. 4.3.7 EVM Controls Pull-Down Menu
      8. 4.3.8 Software Revision
  8. 5Bill of Materials
  9. 6Revision History

2.3 Theory of Operation For USB_DIG_Platform

Figure 2-4 shows the block diagram for the USB DIG Platform. This platform is a general-purpose data acquisition system used on other Texas Instruments evaluation modules. The details of the USB DIG Platform operation are included in a separate document (available for download at www.ti.com). The block diagram shown in Figure 2-4 gives a brief overview of the platform. The TUSB3210 is the primary control device for the USB DIG Platform.

GUID-1DA8B1AB-7E29-4B50-8C3E-D9657DCC2559-low.gifFigure 2-4 USB_DIG_Platform Theory of Operation

The USB DIG can provide power to the EVM PCB. As depicted in Figure 2-4, switched power for the EVM can be derived from the USB supply of the PCB or from an external power source connected to J5. TI recommends using the external supply option because the USB power supply can be noisy. The barrel connector cable assembly included in the EVM kit can connect an external power supply to the USB DIG. Connect the black wire of the cable assembly to the low side (or ground) of the external supply and the red wire to the high side.

Note:

For proper operation, the external source must provide a supply voltage between 5.8 V and 10.4 V and have a current limit greater than 100 mA.