ADC Type Characteristics Matching

This question requires matching four types of Analog-to-Digital Converters (ADCs) with their primary characteristics.

Matching ADC Types and Characteristics

• Flash type ADC (A): This converter uses parallel comparators to determine the digital output instantly. Its architecture allows for very high conversion speeds. Therefore, Flash ADC corresponds to the Fastest (II) characteristic.
• SAR type ADC (B): Successive Approximation Register (SAR) ADCs are widely used due to their good balance between speed, resolution, and power consumption. They are a common choice for many digital signal processing applications. Thus, SAR ADC matches with the Most widely used type (I) characteristic.
• Ramp type ADC (C): This ADC uses a simple counter and a Digital-to-Analog Converter (DAC) to create a voltage ramp. Its design is straightforward and easy to implement, making it the Simplest type (III) of ADC.
• Integrating type ADC (D): These ADCs measure the average value of the input voltage over a specific period. This integration process enhances noise immunity and provides high precision, leading to the Most accurate (IV) characteristic.

Conclusion

Based on the analysis:

• A matches with II (Fastest)
• B matches with I (Most widely used type)
• C matches with III (Simplest type)
• D matches with IV (Most accurate)

The correct matching is A-II, B-I, C-III, D-IV.