Analog-to-Digital Converter (ADC) Core

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Here, we examine the primary components of the 12-bit Analog-to-Digital Converter (ADC) core.

• Front-End Multiplexer for Analog Inputs
  • The front-end multiplexer (mux) selects which analog input signal, either from external pins or internal sources, is routed to the ADC core for conversion.
• Sample and Hold Logic
  • The sample and hold circuit captures the voltage level of the selected analog input at a specific moment in time and maintains (holds) this value steady for the conversion process.
• Conversion Control Logic
  • The conversion control logic manages the timing and operation of the ADC conversion process.
    • Determines when sampling starts and stops
    • Initiates the conversion sequence
    • Handles triggers from software or hardware sources
  • This logic ensures that conversions occur at the correct times and according to the configured settings for each data channel.
• Data Results
  • After the analog signal is converted to a digital value, the result is stored in a dedicated buffer or register. These data results can then be accessed by the system for further processing, analysis, or decision-making.