SLAU934 September   2024 DAC121S101-SEP

 

  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 Glitch Testing
  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. 5.1 Trademarks
  12. 6Related Documentation

2.1.1 Hardware Theory of Operation

The DAC121S101SEPEVM is connected to the computer through the onboard 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, supplies, and the DAC output. A block diagram of the DAC121S101SEPEVM is shown in Figure 2-1.

DAC121S101SEPEVM Theory of Operation Block Diagram Figure 2-1 Theory of Operation Block Diagram

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

The DAC121S101-SEP VA has multiple supply options. By default, VA is connected to the USB-5V supply through jumpers J6 and J8. VA can be supplied by an external power supply through banana jack J4 by removing the shunt on J6 and connecting pins 1 and 2 on J8. In addition, the EVM comes with a precision 3V voltage regulator. The regulator can be enabled by shorting J9 to and connecting pins 2 and 3 on jumper J8.

There are multiple unpopulated components on the EVM that can be populated to change the configuration of the EVM:

  • C17 and R8 are 0603 footprints for capacitor or resistor loads on the VOUT output.
  • J2 and J21 are an optional SMA outputs. For more information, see Table 2-3.