Names and aliases of ADC architectures A simultaneous analog-to-digital converter is also commonly called a ________ ADC.
Digital Electronics
Interfacing to the Analog World
Difficulty: Easy
Choose an option
-
Aflash
-
Bsynchronous
-
Ccomparator
-
Dasynchronous
Answer
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