SBAU279 October   2020 ADS7038-Q1

 

  1.   Trademarks
  2. 1Introduction
  3. 2ADS7038Q1EVM-PDK Overview
    1. 2.1 Connections to Input Channels
    2. 2.2 Digital Interface
    3. 2.3 ADS7038Q1EVM-PDK PAMBoard Interface
    4. 2.4 Power Supplies
  4. 3ADS7038Q1EVM-PDK Initial Setup
    1. 3.1 EVM Plug-In Hardware Setup Instructions
    2. 3.2 The ADS7038 GUI Online and TI Cloud Agent Application Installation
    3. 3.3 ADS7038Q1EVM-PDK GUI Overview
      1. 3.3.1 ADS7038Q1EVM-PDK GUI Landing Page
      2. 3.3.2 ADS7038 Functional Configuration
        1. 3.3.2.1 Device Mode Configuration
        2. 3.3.2.2 Channel Selection
        3. 3.3.2.3 Channel Configuration
          1. 3.3.2.3.1 Input Channel Configuration
          2. 3.3.2.3.2 Output Channel Configuration
          3. 3.3.2.3.3 Alert Configuration
        4. 3.3.2.4 Averaging & Statistics
        5. 3.3.2.5 Cyclic Redundancy Check (CRC)
      3. 3.3.3 Data Capture Tab
        1. 3.3.3.1 Analog Input Data Capture Features
          1. 3.3.3.1.1 Time Domain Display
          2. 3.3.3.1.2 FFT
          3. 3.3.3.1.3 Histogram Display
      4. 3.3.4 Digital Input Page
      5. 3.3.5 Register Map
  5. 4Input Signal-Conditioning Circuitry on the ADS7038Q1EVM
  6. 5Bill of Materials, Printed Circuit Board Layout, and Schematics
    1. 5.1 Bill of Materials
    2. 5.2 PCB Layout
    3. 5.3 Schematics

1 Introduction

The ADS7038-Q1 EVM is a fully-assembled evaluation platform designed to highlight the ADS7038-Q1 features and various modes of operation that make this device suitable for ultra-low-power, small-size sensor monitor applications. The accompanying Precision ADC Motherboard (PAMBoard) development kit is used as a USB-to-PC GUI communication bridge. This kit also serves as an example implementation of a master microcontroller (MCU) to communicate with the ADS7038-Q1 device through a serial-peripheral interface (SPI).

Note:

The ADS7038-Q1 EVM requires an external master controller to evaluate the ADS7038-Q1 device.

The PAMBoard is controlled by commands received from the ADS7038-Q1 GUI, and returns data to the GUI for display and analysis. If the PAMBoard is not used, the EVM plug-in module format allows for an alternative external host to communicate with the ADS7038-Q1 by easily connecting through a pin header. The ADS7038-Q1 device incorporates all required circuitry and components with the following features:

  • ADS7038-Q1 small general purpose, feature integrated, eight-channel ADC

  • Buffered analog input drive circuit available on channel 0

  • External power-supply connection available to provide DVDD power supply instead of the USB power

  • Adjustable linear regulator, TPS78001, to generate stable output voltage to AVDD from the 5-V USB power from the PAMBoard

  • SPI for communication and configuration of modes

Figure 1-1 shows the ADS7038-Q1EVM input circuity for the analog inputs.

GUID-20201006-CA0I-F6TP-LPM0-Z4XP37D7XF6G-low.gifFigure 1-1 ADS7038-Q1EVM Input Circuity.