SLVUD97 September   2026

 

  1.   1
  2.   Description
  3.   Features
  4.   4
  5. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  6. 2Hardware
    1. 2.1 ADS9308V8IEVM Quick Start Guide
    2. 2.2 Analog Interface
      1. 2.2.1 ADC Input SMA Connections
      2. 2.2.2 Voltage Reference
    3. 2.3 Digital Interface and Clock Inputs
      1. 2.3.1 Digital Interface Connections
      2. 2.3.2 Level Translators
    4. 2.4 Power Supplies
      1. 2.4.1 USB Power and When to Power the Board Externally
  7. 3Software
    1. 3.1 ADS9308V8IEVM Software Installation
      1. 3.1.1 USB Driver Installation
    2. 3.2 ADS9308V8IEVM Software (ADS9308V8IEVM-GUI)
      1. 3.2.1 Using Configuration Tab
      2. 3.2.2 Using the Data Capture Tab
  8. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layout
    3. 4.3 Bill of Materials (BOM)
  9. 5Additional Information
    1. 5.1 Trademarks
  10. 6Related Documentation

2.4 Power Supplies

By default, the TSWDC155EVM provides the ADS9308V8IEVM with a 3.3V supply (3P3V). The ADS9308V8IEVM has a TPS61070 boost converter that boosts the 3.3V supply to 5.4V. By default, this voltage is applied to low-dropout regulators (LDOs) to derive the AVDD_5V, AVDD_1V8, and IOVDD supplies when JP1 is in the [1-2] position. U5 (TPS7A2050) provides the 5V AVDD_5V supply, U6 (TPS7A2018) provides the AVDD_1V8 supply, and U4 (TPS7A2033) provides 3.3V for IOVDD, respectively. The LDO input voltage can be changed to an external source (5.2V to 5.5V) applied to terminal block J7 by placing a shunt on JP1 in the [2-3] position. In this case, U3 (LM66100) provides reverse polarity protection if the connection is wired incorrectly.

IOVDD can be either 1.8V or 3.3V. This allows ADS9308V8I the interface with both FPGAs and MCUs.

To set the IOVDD = 1.8V on the EVM:

  • Populate R75 and depopulate R76

To set the IOVDD = 3.3V on the EVM:

  • Populate U4 with TPS7A2033
  • Populate R76 and depopulate R75

Figure 2-7 shows the power tree schematic for the ADS9308V8IEVM.

ADS9308V8IEVM Power Entry and RegulatorsFigure 2-7 Power Entry and Regulators