SBAU468 September   2024

 

  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 Interfaces
      1. 2.1.1 Analog Input
      2. 2.1.2 EVM Output Configurations and Descriptions
      3. 2.1.3 Amplifier Output
        1. 2.1.3.1 Differential Output
        2. 2.1.3.2 Single-Ended Output, Fixed Gain
        3. 2.1.3.3 Single-Ended Output, Ratiometric Gain
      4. 2.1.4 Modulator Output
        1. 2.1.4.1 External Clock
    2. 2.2 Power Supplies
      1. 2.2.1 VDD1/AVDD Input
      2. 2.2.2 VDD2/DVDD Input
    3. 2.3 EVM Operation
      1. 2.3.1 Analog Input and VDD1/AVDD Power
      2. 2.3.2 Outputs and VDD2/DVDD Power
      3. 2.3.3 Test Procedure
        1. 2.3.3.1 Equipment Setup
        2. 2.3.3.2 Procedure
  9. 3Hardware Design Files
    1. 3.1 Schematics
    2. 3.2 PCB Layout
    3. 3.3 Bill of Materials
  10. 4Additional Information
    1. 4.1 Trademarks
  11. 5Related Documentation

2.3.3.2 Procedure

  1. Set the first 5V (+/-10%) source and limit the current to 50mA as noted above. Connect the EVM voltage source to the connectors VDD2/DVDD pin referenced to GND2/DGND. Turn on the power source and make sure there is no more than the specified current limit in the device data sheet drawn.
  2. Set the second 5V (+/-10%) source and limit the current to 50mA as noted above. Connect the EVM voltage source to the connectors VDD1/AVDD pin referenced to GND1/AGND. Turn on the power source and make sure there is no more than the specified current limit in the device data sheet drawn.
  3. Tie input to ground. Use the oscilloscope or the DMM to verify that isolated power is present on both supplies. Measure the output of the device referenced to GND2/DGND and verify:
    1. For amplifiers using either the oscilloscope or the DMM: the isolated voltage is within the common-mode output voltage (typ. 1.44V for differential output, VREF/2 for single-ended output).
    2. For modulators using the oscilloscope: the digital output is a stream of ones and zeros that are high 50% of the time and low 50% of the time.
    3. For modulators using the DMM: the DMM is about 50% magnitude of DVDD.
  4. CAUTION:
    AMC038XEVM
    The board can heat up under high power or improper use conditions. Contact can cause burns. Do not touch. Take the proper precautions when operating.
    CAUTION:
    AMC038XEVM
    Electric shocks are possible when connecting the board to high voltage inputs. The board must be handled with care by a professional. For safety, use of isolated test equipment with overvoltage or overcurrent protection is highly recommended.
    Depending on the mounted device, apply the appropriate DC full-scale linear input signal to the VHV1 turret connection. Typically: 400V, 600V, 1000V, 1600V.
    1. To use the TP6 test point connection to VSNS as an alternate input signal injection point is also possible. If using the TP6 test point, then a 1V signal can be applied instead.
      CAUTION: Only use one of the input pins for signal injection. Do not input a signal on both the VHV1 and TP6 test points.
  5. Measure the output with the oscilloscope or the DMM.
    1. For amplifiers using either the oscilloscope or the DMM: Verify that the output voltage reaches the full-scale output for the installed device.
      1. 2.V FSR for differential amplifiers.
      2. VREF FSR for single-ended amplifiers.
    2. For modulators using the oscilloscope: Verify that the digital output is proportional to the expected conversion.
      1. For a positive full scale linear input, the digital output needs to be high about 90% of the time.
    3. For modulators using the DMM: Verify that the digital output is proportional to the expected conversion. Apply a DC input signal.
      1. For a positive full scale linear input, the digital output needs to be about 90% magnitude of DVDD.