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

4.3.2 Config Tab

The Config tab has the following controls:

  • Shunt voltage attenuator range (smallest range: 40 mV; largest range: 320 mV)
  • Shunt voltage configuration: resolution and number of averages. Note that increasing the number of averages decreases the noise but slows down the conversion rate.
  • Bus voltage attenuator range (16 V and 32 V): Note that the maximum bus voltage for the INA220 is 26 V. Thus, the 32V range cannot be fully used.
  • Bus voltage configuration: Resolution and number of averages. Note that increasing the number of averages decreases noise but slows down the conversion rate.
  • A/D converter mode: This control determines how the converters work. The most commonly used modes are Shunt and Bus continuous conversion mode. This mode causes both converters to run continuously.

More details on these options are explained in the product data sheet.