SLVUDY9 September   2026

 

  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
  8. 3Software
    1. 3.1 GUI Installation
    2. 3.2 Software Description
      1. 3.2.1 DAC90802 Register Page
      2. 3.2.2 DAC90802 DC Output Page
      3. 3.2.3 DC Linearity Page
      4. 3.2.4 Arbitrary Waveform Generation Page
        1. 3.2.4.1 Quick Start
        2. 3.2.4.2 GUI Control Reference
        3. 3.2.4.3 Update Rate
      5. 3.2.5 Multiplying Mode Page
        1. 3.2.5.1 Multiplying Bandwidth Measurement Setup
        2. 3.2.5.2 Multiplying THD Measurement
  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

3.2.4.2 GUI Control Reference

Table 3-4 explains required details to use the AWG page of the EVM GUI parameters from SCLK to duty cycles.

Table 3-2 DAC90802EVM GUI Control Reference
PARAMETER DEFAULT PARAMETER PARAMETER OPTION DESCRIPTION
SCLK 65MHz 3MHz to 66MHz

Sets the serial clock frequency used for DAC communication. The serial clock frequency must be configured before waveform generation.
Reference voltage 5V 5V,10V,15V, 20V

Selects reference voltage by using appropriate jumper(SH-J) through gain amplifier U2
Update rate 7.22MHz 100kHz to 33MHz

Selecting appropriate SCLK and SPI configuration helps to generate required update rate.
Device mode of operation High precision High precision, high speed

High precision: 18-bit DAC resolution is selected. High speed: 16-bit DAC resolution is selected.
Device configuration mode AWG mode AWG mode, fast settling, multiplying mode DAC channel is configured in the selected mode.
SPI configuration QSPI_DDR CSPI_SDR, CSPI_DDR, DSPI_SDR, DSPI_DDR, QSPI_SDR, QSPI_DDR, QSPI_DDR_STREAM DAC is configured in selected SPI mode.
Waveform type Sinusoidal wave Sinusoidal wave, rectangular wave and square wave Select the type of waveform. Default waveform type is sinusoidal waveform.
Frequency 2kHz 100Hz to 1MHz Any output frequency within the appropriate range can be generated.
Minimum amplitude –5V –20V to –0.1V Based on the reference voltage(see the Table 3-4), any negative reference voltage can be selected digitally.
Maximum amplitude 5V 0.1V to 20V Based on the reference voltage (see the Table 3-4), any positive reference voltage can be selected digitally.
Duty cycle 50% 0% - 100% Controls waveform symmetry for square and triangular waveforms. Duty cycle is not applicable for sinusoidal waveform type.