SBAU431 July   2024 ADS1282

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   Applications
  6.   6
  7. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Performance Development Kit Contents
    3. 1.3 Specifications
    4. 1.4 Device Information
  8. 2Hardware
    1. 2.1  EVM Analog Input Options
    2. 2.2  Common-Mode Amplifier
    3. 2.3  Analog Input 1 Circuit
    4. 2.4  Analog Input 2 Amplifier
    5. 2.5  Voltage Reference
    6. 2.6  ADC Connections and Decoupling
    7. 2.7  Power Supplies
    8. 2.8  Low Dropout Regulators (LDO)
    9. 2.9  Flip-Flop/SYNC Circuit
    10. 2.10 Clocking
    11. 2.11 Serial Interface
    12. 2.12 EEPROM
  9. 3Software
    1. 3.1 Software Description
    2. 3.2 ADS1282 EVM Software Installation
  10. 4Implementation Results
    1. 4.1 EVM Operation
      1. 4.1.1 Evaluation Setup
      2. 4.1.2 EVM Register Settings
        1. 4.1.2.1 Channel Configuration
        2. 4.1.2.2 PGA Gain Selection
        3. 4.1.2.3 Data Rate Configuration
      3. 4.1.3 Time Domain Display
      4. 4.1.4 Spectral Analysis Display
      5. 4.1.5 Histogram Analysis Display
  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. 7Related Documentation
    1. 7.1 Supplemental Content

4.1.1 Evaluation Setup

Connect the EVM as shown in Figure 5-1 after installing the software:

  1. Physically connect P2 of the PHI to J8 of the ADS1282EVM. Install the included screws to provide a robust connection.
  2. Connect the USB connector on the PHI to the computer.
    1. LED D5 on the PHI lights up, indicating that the PHI is powered up.
    2. LEDs D1 and D2 on the PHI start blinking to indicate that the PHI is booted up and communicating with the PC; Figure 5-1 shows the resulting LED indicators.
  3. Start the software GUI as shown in Figure 5-2. Notice that the LEDs blink slowly when the FPGA firmware is loaded on the PHI. This loading takes a few seconds. LED D1 on the ADS1282EVM illuminates once a connection has been established.
  4. Connect the differential signal generator to the ADS1282EVM inputs. The full-scale input range is ±2.5V differential with a common mode from 0V to 2.5V. A typical input signal is a 4.8VPP sinusoidal wave. This signal is adjusted just below the full-scale range to avoid clipping.
  5. Verify the default jumper positions of the ADS1282EVM. Jumper JP1 is placed in the UNIPOLAR position (pins 1-2) by default. Jumper JP3 is placed in the ENABLE position (pins 2-3) by default.
ADS1282V2EVM-PDK Connecting the Hardware to the ADS1282EVMFigure 4-1 Connecting the Hardware to the ADS1282EVM
ADS1282V2EVM-PDK Launch the ADS1282EVM GUI SoftwareFigure 4-2 Launch the ADS1282EVM GUI Software