SBAU382A November   2021  – January 2022 ADS7029-Q1 , ADS7039-Q1 , ADS7040 , ADS7041 , ADS7042 , ADS7043 , ADS7044 , ADS7046 , ADS7047 , ADS7049-Q1 , ADS7052 , ADS7054 , ADS7056 , ADS7057

 

  1.   Trademarks
  2. 1ADS704X-5XEVM-PDK Overview
  3. 2Introduction to the ADS704X-5XEVM
    1. 2.1 Analog Inputs
      1. 2.1.1 Single-Ended Input Path
      2. 2.1.2 Differential Input Path
    2. 2.2 Power Supplies
    3. 2.3 Digital Interface and Communication
    4. 2.4 I2C Bus for Onboard EEPROM
  4. 3ADS704X-5XEVM Software Installation
  5. 4EVM Operation
    1. 4.1 Connecting the Hardware
    2. 4.2 EVM GUI Global Settings for ADC Control
    3. 4.3 Time Domain Display
    4. 4.4 Spectral Analysis
    5. 4.5 Histogram Analysis
    6. 4.6 Updating EEPROM After ADC Replacement
  6. 5Bill of Materials, Layout, and Schematic
    1. 5.1 Bill of Materials
    2. 5.2 Layout
    3. 5.3 Schematic
  7. 6Revision History

4.1 Connecting the Hardware

After installing the software, connect the EVM as shown in Figure 4-1:

  1. Physically connect P2 of the PHI to J4 of the ADS704X-5XEVM. Install the screws to ensure a robust connection
  2. Connect the USB cable from the PHI to the computer first:
    1. LED D5 on the PHI lights up, indicating that the PHI is powered
    2. LEDs D1 and D2 on the PHI start blinking to indicate that the PHI is booted up and communicating with the PC; Figure 4-1 shows the resulting LED indicators
  3. Start the software GUI. The LEDs blink slowly as the FPGA firmware is loaded on the PHI. This loading takes a few seconds and then the AVDD and DVDD power supplies turn on. LED D1 on the ADS704X-5XEVM (as shown in Figure 4-1) illuminates green to indicate that AVDD is being supplied to the EVM
  4. Connect the signal generator. The input range varies for the different ADCs, but is typically 0 V to AVDD for single-ended devices or –AVDD to +AVDD for differential devices. Check the specific ADC data sheet for more information about allowable input ranges. In any case, adjust the input signal to just below full-scale range to avoid clipping
    1. Texas Instruments offers the PSIEVM as a precision signal generator if such a source is otherwise unavailable to the user. The PSIEVM can be used to generate clean sinusoidal input signals for the ADS704X-5XEVM to verify AC performance specifications.
GUID-20211018-SS0I-PJNG-NNND-VR6KRX94VPKG-low.pngFigure 4-1 Hardware Connections on the ADS704X-5XEVM