Names and aliases of ADC architectures A simultaneous analog-to-digital converter is also commonly called a ________ ADC.

Difficulty: Easy

Correct Answer: flash

Explanation:

Introduction / Context:Many ADC types have alternative names that describe their operating principle. Recognizing these aliases aids datasheet reading and system selection.

Given Data / Assumptions:

  • “Simultaneous” indicates parallel comparisons rather than sequential approximation or integration.

Concept / Approach:The simultaneous ADC performs many threshold comparisons at the same time using a bank of comparators and a resistor ladder. This architecture is widely known as a flash ADC.

Step-by-Step Solution:

Map “simultaneous” → “flash” architecture.Select the alias that matches this principle.

Verification / Alternative check:Textbooks and vendor literature consistently equate “simultaneous” with “flash.”

Why Other Options Are Wrong:

  • Synchronous/asynchronous: Describe timing relationships, not the parallel comparator structure.
  • Comparator: A component used, not the architecture name.

Common Pitfalls:

  • Assuming “synchronous” means “simultaneous”; synchronous refers to clocking, not parallel comparisons.

Final Answer:flash

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