Concept:A dual-slope integrating-type A/D converter offers higher accuracy than a single-slope integrating-type A/D converter.
Explanation:A single-slope integrating-type A/D converter relies on a precise ramp signal and accurate clock timing.
Any noise, component drift, or timing error directly reduces its accuracy.
A dual-slope integrating-type A/D converter operates in two phases: integration and de-integration.
It first integrates the unknown input voltage for a fixed period, then de-integrates it using a known reference voltage.
Both phases use the same clock and the same RC components.
Therefore, errors due to component tolerances, clock frequency drift, and noise are largely cancelled.
This makes the dual-slope method more accurate and provides better noise immunity.
Single-slope converters are simpler, but they are less accurate because they lack this error cancellation.
Thus, dual-slope converters are widely used in digital multimeters and precision measuring instruments.
Answer:Option C: A dual-slope integrating-type A/D converter has a higher accuracy than a single-slope integrating-type A/D converter.