SBAU493 October   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 Specification
    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 ADS125R14 EVM With an External Controller
  9. 3Software Installation and Hardware Connections
    1. 3.1 ADS125R14 EVM GUI Installation
    2. 3.2 ADS125R14 EVM Hardware Connections
  10. 4GUI Operation
    1. 4.1 GUI Navigation and Home Page
    2. 4.2 ADC Configuration
    3. 4.3 Register Settings
    4. 4.4 Analysis Page
      1. 4.4.1 Time-Domain Plot View
      2. 4.4.2 Frequency-Domain Plot View
  11. 5Hardware Design Files
    1. 5.1 Schematics
    2. 5.2 PCB Layouts
    3. 5.3 Bill of Materials (BOM)
  12. 6Additional Information
    1.     Trademarks
  13. 7References

1.3 Specification

Table 1-1 shows specifications applicable to the ADS125R14 EVM and the PHI board:

Table 1-1 ADS125R41EVM and PHI Board Specifications
PARAMETER CONDITIONS VALUE
TemperatureRecommended operating free-air temperature range, TA15°C ≤ TA ≤ 35°C
Power supply input rangeRecommended voltage input range for JP2-2 with respect to GND5.5V ≤ +Vin ≤ 7V
Supply current range |Is|0.25A ≤ |Is | ≤ 0.5A
Input voltage range

Absolute input voltage with respect to

DGND for AIN0 to AIN7 and AINCOM inputs

Input buffer off

AGND - 0.1V ≤ AINx ≤

AVDD + 0.1V

Input buffer onAGND - 0.05V ≤ AINx ≤ AVDD – 1.45V
EXT clockRecommended frequency range (fCLK)0.1MHz ≤ fCLK ≤ 8.4MHz
External digital IO (including EXT clock)Recommended logic levels (applied to header J2) with respect to DGNDLogic level low (VIOl)0V ≤ VIL ≤ 0.3 × DVDD
Logic level high (VIOh)0.7 × DVDD ≤ VIH ≤ DVDD
ADS125R14 AVDD to AGNDRecommended voltage range (applied to JP4-1), external sourceHigh-speed mode3V ≤ AVDD ≤ 5.5V
All other speed modes2.85V ≤ AVDD ≤ 5.5V
ADS125R14 DVDD to DGNDRecommended voltage range (applied to JP1-1), external source1.65V ≤ DVDD ≤ 5.5V
ADS125R14 REFP to AGNDRecommended voltage range (applied to J3-2), external sourceInput buffer offVREFN + 0.5V ≤ AINx ≤ AVDD + 0.1V
Input buffer onVREFN + 0.5V ≤ AINx ≤ AVDD + 0.1V
ADS125R14 REFN to AGNDRecommended voltage range (applied to J3-1), external sourceInput buffer off

AGND - 0.1V ≤ AINx ≤

VREFP – 0.5V

Input buffer on

AGND ≤ AINx ≤

VREFP – 0.5V