SBOU180B november   2016  – july 2023 INA260

 

  1.   1
  2.   INA260EVM-PDK and Software Tutorial
  3.   Trademarks
  4. 1Overview
    1. 1.1 INA260EVM-PDK Contents
    2. 1.2 INA260EVM-PDK Features
    3. 1.3 Related Documentation from Texas Instruments
  5. 2INA260EVM-PDK Hardware
    1. 2.1 SM-USB-DIG Platform Description
    2. 2.2 INA260EVM PCB Description
      1. 2.2.1 EVM Power Supply
      2. 2.2.2 EVM Analog Inputs
    3. 2.3 EVM Digital Inputs and Outputs
  6. 3INA260EVM-PDK (Rev A) Setup
    1. 3.1 One-Time GUI Software Installation
    2. 3.2 INA260EVM Jumper Settings
    3. 3.3 Connecting the Hardware
    4. 3.4 System Power-Up
  7. 4INA260EVM GUI Software
    1. 4.1 Configuration Tool
      1. 4.1.1 Step 1: Set the I2C Address
      2. 4.1.2 Step 2: Configure Operation
      3. 4.1.3 Step 3: Set Conversion Times
      4. 4.1.4 Step 4: Configure Alert
    2. 4.2 Results Bar
    3. 4.3 Graph Tool
    4. 4.4 Registers Tool
  8. 5INA260EVM Documentation
    1. 5.1 Schematic
    2. 5.2 PCB Layout
    3. 5.3 Bill of Materials
  9. 6Revision History

2.3 EVM Digital Inputs and Outputs

The only digital input signals required to operate the INA260 are the 2-bit I2C device address (A[1:0]), serial clock (SCL), and serial data (SDA), which is a bidirectional pin and thus also an output. The device address bits can each assume one of four values: GND, VS, SDA or SCL, resulting in 16 possible target addresses summarized in Table 2-2. The values of A0 and A1 must be set using jumpers J2 and J3, respectively.

Table 2-2 INA260 I2C Address Configuration
A1 A0

TARGET ADDRESS
GND GND 1000000
GND VS+ 1000001
GND SDA 1000010
GND SCL 1000011
VS+ GND 1000100
VS+ VS+ 1000101
VS+ SDA 1000110
VS+ SCL 1000111
SDA GND 1001000
SDA VS+ 1001001
SDA SDA 1001010
SDA SCL 1001011
SCL GND 1001100
SCL VS+ 1001101
SCL SDA 1001110
SCL SCL 1001111

The SM-USB-DIG drives the SCL and SDA through the J4 connector socket. These are open-drain inputs and the EVM contains pullup resistors to drive these inputs high when the corresponding SM-USB-DIG digital outputs are in tri-state. Both fast (1 kHz to 400 kHz) and high-speed (1 kHz to 2.94 MHz) I2C modes are supported.

The outputs of the INA260 include SDA and ALERT, both of which are routed to J4 and are readable from the GUI. The GUI includes support for both over- and underlimit as well as conversion ready indicator modes of the ALERT pin. The state of the ALERT pin can be read from either the GUI or the onboard LED indicator.