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

3.4 Power-Supply Options

The ADS1x15 supports a wide range of supply voltage from 2 V to 5.5 V. The ADS1x15EVM ADC voltage (VDD) can operate from either 3.3 V or 5 V. Power is supplied from the USB 5-V source to the PAMBoard. However, the USB power-supply voltage is not consistent from PC to PC. A DC/DC converter increases the USB output to 5.5 V. A linear low dropout (LDO) regulator uses 5.5 V to establish a clean and stable 5 V and 3.3 V for the ADS1x15V2EVM-PDK.

When the USB cable is plugged into the PC, two LEDs will light on the PAMBoard (Figure 3-4). The bottom LED (D5) indicates that the 5-V output is active. The top LED (D1) indicates that the ADS1x15V2EVM-PDK is ready to communicate with the GUI.

GUID-E8155908-6D30-43CE-9B67-6AFFB64A8BC3-low.gifFigure 3-4 LED Indicators D1 and D5.

Jumper JP1 selects the operating voltage for the ADS1x15 (Figure 3-5). When jumper JP1 is in the bottom position the VDD to the ADS1x15 is set to 5 V and when in the top position the VDD supply is set to 3.3 V.

GUID-20210119-CA0I-KGDV-RQHV-TFSTTFSPJWDK-low.gifFigure 3-5 ADS1x15 Supply Setting Jumper (JP1)