Article ID: 000086790 Content Type: Troubleshooting Last Reviewed: 02/11/2023

Intel® MAX® 10 FPGA single supply Modular ADC Intel® FPGA IP generation Error: ADC_ADC: "External Reference Voltage" (external_vref) <voltage> is out of range: 0.0-2.5

Environment

  • Quartus® II Subscription Edition
  • Modular ADC core Intel® FPGA IP
  • BUILT IN - ARTICLE INTRO SECOND COMPONENT
    Description

    You will receive this error message when 'generate HDL' after the analog-to-digital converter (ADC) reference voltage switch from the external mode to internal mode in Intel® MAX® 10 FPGA single supply Modular ADC Intel® FPGA IP . This issue is due to the IP hw.tcl set the allowable range of external reference voltage source to a default value of 0.0-2.5 V instead of valid range allowable by the selected device. 

    Resolution

    This problem will be fixed in the future release of the Intel® Quartus® Prime Software version. Follow these steps for temporary workaround when the ADC reference voltage switch from the external mode to internal mode:

    1. Set the ADC reference voltage external to 2.5 V and below before switch to internal mode.
    2. Generate the HDL.
    3. Change the ADC reference voltage to internal mode.
    4. Generate the HDL again.

    Related Products

    This article applies to 1 products

    Intel® MAX® 10 FPGAs