SLAU858A november   2021  – june 2023

 

  1.   1
  2.   AFE881H1 Evaluation Module
  3.   Trademarks
  4. 1Overview
    1. 1.1 Kit Contents
    2. 1.2 Related Documentation From Texas Instruments
  5. 2USB2ANY Interface Adapter
    1. 2.1 Signal Definitions for J10
    2. 2.2 USB2ANY Theory of Operation
  6. 3EVM Hardware Overview
    1. 3.1 Electrostatic Discharge Caution
    2. 3.2 EVM Block Diagram
    3. 3.3 EVM Jumper Summary
    4. 3.4 Terminal and Pin Definitions
    5. 3.5 Connecting the USB2ANY
    6. 3.6 Connecting the USB Cable to the USB2ANY Interface Adapter
    7. 3.7 Optional EVM Operations
      1. 3.7.1 Power Configuration
      2. 3.7.2 External SPI and UART Controllers
  7. 4Software Overview
    1. 4.1 Software Installation
    2. 4.2 Launching the Software
    3. 4.3 Software Features
      1. 4.3.1 AFE881H1 Register Page
      2. 4.3.2 High Level Configuration Page
      3. 4.3.3 Using the Python Scripting Tool
  8. 5Schematics, PCB Layout, and Bill of Materials
    1. 5.1 Board Schematic
    2. 5.2 PCB Components Layout
    3. 5.3 Bill of Materials
  9. 6Revision History

1 Overview

The AFE881H1 16-bit digital-to-analog converter (DAC) is a highly-integrated, high-accuracy, and extremely low-power device with voltage-outputs designed for HART® enabled sensor transmitter applications. The AFE881H1 includes most of the components required to construct a transmitter for 2-wire (loop-powered), 4-mA to 20-mA sensor transmitter applications. These components include a 16-bit highly accurate DAC, a HART FSK modem, an internal 10-ppm/°C voltage reference, and an internal diagnostic ADC. To accommodate intrinsic and functional safety concerns, external voltage-to-current conversion and power-regulation are required.