SLAU151B may   2023  – june 2023 DAC8801 , DAC8811

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1 Power Requirements
    2. 2.2 Jumper Information
    3. 2.3 Setup
    4. 2.4 Header Information
    5. 2.5 Test Points
  8. 3Software
    1. 3.1 GUI Installation
    2. 3.2 Software Description
  9. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layouts
    3. 4.3 Bill of Materials (BOM)
  10. 5Compliance Information
    1. 5.1 Compliance and Certifications
  11. 6Related Documentation
    1. 6.1 Supplemental Content
  12. 7Revision History

2.3 Setup

After the power and jumper configurations are set up per Table 3-1 and Table 3-2, and the DAC8811EVM GUI is fully installed, connect the USB cable from the DAC8811EVM USB port to the local machine. Figure 3-2 displays the system hardware setup.

GUID-20230605-SS0I-CP0D-GJKB-ZPGVSTRDHKHL-low.svg Figure 2-2 DAC8811EVM Hardware Setup

The DAC8811EVM features a configurable op amp circuit that can be modified to change the output of the EVM. Figure 3-3 shows the available resistors and capacitors in the circuit. Any components crossed out with a red "X" are not included by default with the EVM.

GUID-20230605-SS0I-T6FW-MMBW-JX3PPMS0WJNW-low.svg Figure 2-3 DAC8811EVM Op Amp Configuration

To change the output voltage range for the circuit, the resistance at R3, R4, or R6 can be changed. This can easily be done by swapping the entire resistor or adding another resistor in parallel to change the equivalent resistance. The below equation can be used to calculate new resistor values if desired.

Equation 1. VOUT=R4R6×VREF×Code2BITS-R4R3×VREF

If an op amp other than the OPA2828 is used, then U2 can be removed from the EVM and another op amp can be added. The new op amp must either be a HVSSOP or DIP-8 package type. Figure 3-4 shows the pin configuration of the DIP-8 adapter included on the DAC8811EVM.

GUID-20230605-SS0I-RVVD-BHGR-WWRWNJZDJLHL-low.svg Figure 2-4 DAC8811EVM Op Amp DIP Adapter