SLAU919 November   2023

 

  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 Hardware Setup
      1. 2.1.1 Hardware Theory of Operation
      2. 2.1.2 Jumper Definitions
      3. 2.1.3 Connector Definitions
      4. 2.1.4 Test Points
    2. 2.2 Hardware Overview
      1. 2.2.1 Electrostatic Discharge Caution
      2. 2.2.2 Connecting the FTDI Digital Controller
      3. 2.2.3 SPI Configuration
      4. 2.2.4 I2C Configuration
  9. 3Software
    1. 3.1 Software Setup
      1. 3.1.1 Software Installation
    2. 3.2 Software Overview
      1. 3.2.1 Launching the Software
      2. 3.2.2 Software Features
        1. 3.2.2.1 Low Level Configuration Page
        2. 3.2.2.2 High Level Configuration Page
  10. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layout
    3. 4.3 Bill of Materials
  11. 5Additional Information
    1.     Trademarks
  12. 6Related Documentation

2.1.1 Hardware Theory of Operation

The DAC80502-01EVM is connected to the computer through the on-board FTDI digital controller using the USB cable that is supplied with the EVM. The evaluation board features connectors and test points for all communication lines, DAC outputs, and supplies. Figure 3-1 shows a block diagram of the DAC80502-01EVM.

GUID-20231023-SS0I-BR9R-PCNX-TKLCTWVKVNQD-low.svgFigure 2-1 Theory of Operation Block Diagram

The USB connection provides the 5-V supply to the EVM. Voltage regulators generate 3.3 V and 1.8 V from the USB 5-V supply. These 3.3-V and 1.8-V supplies are used to power the FTDI controller.

The DAC80501 and DAC80502 VDD supplies can use the on-board 5-V or 3.3-V supplies depending on the jumper J6 setting. By default, VDD is connected to the on-board 5-V supply. Alternatively, VDD can be supplied externally through banana jack J4. Remove the jumper connector on J6 before connecting external supplies to VDD.

The device reference voltage can be supplied by an onboard 2.5-V voltage regulator by shorting jumper J10 for DAC80502 and J12 for DAC80501, or from an external supply with SMA connector J9. Make sure that the internal reference is powered off before connecting any other voltage supply to the VREFIO pin.

Each of the DAC outputs have footprints available for capacitor and resistor loads that are unpopulated by default.