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

2.1 Power Requirements

The USB connection at J12 provides 5 V of power to the EVM. This connection is necessary if using the DAC8811EVM-GUI, as the FT4222 is powered by one of the LDOs on the board. Two LDOs translate the USB power to 3.3-V and 2.5-V supplies used for VDD and VREF respectively. There are jumper options available to disconnect the supplies if external supplies are desired to power or regulate the DAC8811. VCC and VSS must be provided externally for proper operation of the OPA2828 or any other op amp used. As the default configuration is for a ±10 V output, TI recommends to provide between 11 V and 18 V to VCC and between –11 V and –18 V to VSS. Table 3-1 summarizes the external power connections.

Table 2-1 DAC8811EVM Power Supply Inputs
Terminal Name Function
J1 VCC External +11 V to +18 V connection for OPA2828's VCC (required)
J2 VSS External –11 V to –18 V connection for OPA2828's VSS (required)
J3 GND Ground connection
J4 VDD Optional external VDD power supply (disconnect J9 when using external supply)
J5 VREF Optional external VREF power supply (disconnect J10 when using external supply)