SNAU257 October   2020 TPL1401

 

  1.   Trademarks
  2. 1Overview
    1. 1.1 Kit Contents
    2. 1.2 Related Documentation from Texas Instruments
  3. 2System Setup
    1. 2.1 Software Setup
      1. 2.1.1 Operating Systems
      2. 2.1.2 Software Installation
      3. 2.1.3 Analog EVM Controller Firmware Upgrade
    2. 2.2 Hardware Setup
      1. 2.2.1 Power Configurations and Jumper Settings
      2. 2.2.2 Connecting the Hardware
      3. 2.2.3 Electrostatic Discharge Warning
  4. 3Detailed Description
    1. 3.1 Hardware Description
      1. 3.1.1 Theory of Operation for the BOOSTXL-DAC-PORT
      2. 3.1.2 Signal Definition of the BOOSTXL-DAC-PORT
      3. 3.1.3 Theory of Operation for the TPL1401EVM Hardware
      4. 3.1.4 Signal Definition of the TPL1401EVM
    2. 3.2 Software Description
      1. 3.2.1 Starting the Software
      2. 3.2.2 Software Features
        1. 3.2.2.1 Home Page
        2. 3.2.2.2 Setup Page
        3. 3.2.2.3 DIGIPOT Quick-Start Page
          1. 3.2.2.3.1 Basic DPOT Configuration Tab
        4. 3.2.2.4 Register Map Page
        5. 3.2.2.5 Collateral Page
  5. 4Schematic, PCB Layout, and Bill of Materials
    1. 4.1 BOOSTXL-DAC-PORT Schematic
    2. 4.2 TPL1401EVM Schematic
    3. 4.3 PCB Components Layout
    4. 4.4 BOOSTXL-DAC-PORT Bill of Materials
    5. 4.5 TPL1401EVM Bill of Materials

1 Overview

The TPL1401EVM is an easy-to-use platform to evaluate the functionality and performance of the TPL1401 device. The TPL1401 is a digital potentiometer (DPOT) with buffered wiper. The buffered wiper isolates the resistor string from the output load impedance making the TPL1401 an excellent choice for voltage divider and analog setpoint applications. The TPL1401 consumes very low power and is available in a tiny 8- pin WSON package. The NVM also supports 2 bytes of user data storage for storing configuration revision data or calibration settings of companion devices. The DPOT uses the power supply as the voltage reference, which can operate between 1.8 V and 5.5 V. In this power supply range, the DPOT can be used as a programmable gain or attenuation device. This device supports I2C standard mode, fast mode, and fast+ mode. The TPL1401 provides the FB pin to configure the output as a programmable current sink using an external MOSFET. The TPL1401 is simple to program using an I2C interface at factory or in real-time. An integrated nonvolatile memory (NVM) enables factory programming for trimming and calibration applications. This makes the operation of the DPOT processor-less. The EVM provides the GPIO and I2C programming interface using a PC-based graphical user interface (GUI).