SBAU434B November   2025  – April 2026

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 EVM Specifications
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1 Analog Inputs
    2. 2.2 ADC Connections and Decoupling
    3. 2.3 Digital Interface
    4. 2.4 Power Supplies
    5. 2.5 Voltage Reference
    6. 2.6 Clocking
    7. 2.7 Using the ADS125P08 EVM With an External Controller
  9. 3Software
    1. 3.1 Software Description
    2. 3.2 ADS125P08 GUI Installation
  10. 4Implementation Results
    1. 4.1 Hardware Connections
    2. 4.2 GUI Operation
      1. 4.2.1 ADC Capture Settings and Sequencer Configuration
      2. 4.2.2 Time-Domain Display
      3. 4.2.3 Frequency-Domain Display
      4. 4.2.4 Histogram Display
      5. 4.2.5 EVM Register Settings
  11. 5Hardware Design Files
    1. 5.1 Schematics
    2. 5.2 PCB Layouts
    3. 5.3 Bill of Materials (BOM)
  12. 6Additional Information
    1. 6.1 Trademarks
  13. 7Revision History

2.6 Clocking

Figure 2-6 shows an optional external clock connection on the ADS125P08 EVM using an SMA connector. The ADS125P08 integrates a high-accuracy oscillator that is sufficient for most applications. If necessary, component footprints are included on the EVM that enable an external clock. By default, the SMA connector and series resistance are not installed, and therefore must be added to the EVM by the user. Verify that any external clock signal applied to the ADC meets the clocking requirements as described in Table 1-1. Additionally, the ADC registers need to be configured to use an external clock. See the ADC data sheet for more information.

ADS125P08EVM-PDK Optional External Clock Connection Figure 2-6 Optional External Clock Connection