SLAU912 January   2024

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 Power Requirements
    2. 2.2 Jumper Information
    3. 2.3 Setup
    4. 2.4 Test Points
    5. 2.5 High-Current Optional Stage
  9. 3Software
    1. 3.1 GUI Installation
    2. 3.2 Software Development
  10. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials (BOM)
  11. 5Additional Information
    1. 5.1 Trademarks

2.1 Power Requirements

The USB connection at J15 provides 5-V to the EVM. This connection is necessary if using the DAC814xxEVM GUI, as the communication is done through the USB port and the FT4232 is powered by one of the LDOs on the board. On board supply for IOVDD is available ( LDO generated 1.8-V or 3.3-V through J21). DVDD and IOVDD power supply of DAC81404 can be provided externally through J7 and J10 respectively. AVDD and AVSS power supply of DAC81404 need to connected externally through J8 and J9 respectively. AVSS can be connected to GND through J22.

  • AVDD : 0 to 41.5 V (default + 15 V)
  • AVSS : 0 to -21.5 V (default - 15 V)
  • DVDD : 4.5 V to 5.5 V (default + 5 V)
  • IOVDD : 1.7 V to 5.5 V (default + 3.3 V)
  • (AVDD - AVSS) must not be greater than 43 V

Table 3-1 summarizes the external power connections.

Table 2-1 DAC81404EVM Power Supply Inputs
TerminalNameFunction
J8AVDDPositive supply voltage for the DAC81404 output buffers.
J9AVSSNegative supply voltage for DAC81404 output buffers.
J7DVDDDigital and analog supply voltage for the DAC81404.
J10IOVDDIO supply voltage for setting the digital I/O operating voltage for the DAC81404.
J3GNDGround connection.