SBAU362 March   2021 ADS1015 , ADS1115

 

  1.   Trademarks
  2. 1Introduction
  3. 2Quick Start
    1. 2.1 Step 1 - Hardware Setup
    2. 2.2 Step 2 - USB Connection and GUI Startup
    3. 2.3 Step 3 - Configuration and Data Collection
  4. 3ADS1x15EVM Overview
    1. 3.1 ADS1x15EVM-to-PAMBoard Interface
    2. 3.2 Digital Interface
    3. 3.3 Analog Input Connections
    4. 3.4 Power-Supply Options
  5. 4ADS1x15V2EVM-PDK Setup and Operation
    1. 4.1 EVM Plug-In Instructions
    2. 4.2 ADS1x15EVM GUI and TI Cloud Agent Installation
  6. 5ADS1x15V2EVM-PDK GUI
    1. 5.1 Menu Bar
      1. 5.1.1 File Menu
      2. 5.1.2 Options Menu
      3. 5.1.3 Tools Menu
      4. 5.1.4 Help Menu
    2. 5.2 Navigation Bar
      1. 5.2.1 Home
      2. 5.2.2 Chart
        1. 5.2.2.1 Channel Statistics
          1. 5.2.2.1.1 Time Domain and Histogram Statistics
          2. 5.2.2.1.2 FFT Statistics
        2. 5.2.2.2 Time Domain Plot
        3. 5.2.2.3 Histogram Plot
        4. 5.2.2.4 FFT Plot
        5. 5.2.2.5 Capture Configuration Settings
      3. 5.2.3 Configuration
        1. 5.2.3.1 Register Read and Write Options
          1. 5.2.3.1.1 Read Register Options
          2. 5.2.3.1.2 Write Register Options
    3. 5.3 Connection Status
  7. 6Bill of Materials, Printed Circuit Board Layout, and Schematics
    1. 6.1 Bill of Materials
    2. 6.2 Printed Circuit Board Layout
    3. 6.3 Schematics

3.2 Digital Interface

As noted in Section 3.1, the ADS1x15 interfaces with the PAMBoard and the PAMBoard communicates with the computer over USB. The two devices on the EVM requiring communication are the ADS1x15 ADC (U1) and the electrically erasable programmable read-only memory (EEPROM) (U3) using I2C (see Figure 6-5). The EEPROM is preprogrammed with the information required to configure and initialize the ADS1x15V2EVM-PDK GUI software platform. When the hardware is initialized through the software, the EEPROM is no longer used.

The PAMBoard and EEPROM (U3) use 3.3 V for the device interface logic levels. The ADS1x15 can operate at either 3.3 V or 5 V as desired by jumper selection JP1. To allow the ADS1x15 to operate at 5-V logic levels, a logic level translator (U2) is used.