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Pick the odd one out?

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Pick the odd one out?

(a) R-2R converters

(b) String  converters

(c) Weighted current source converters

(d) Flash conversion

The question was posed to me in an internship interview.

This interesting question is from Data Conversion in chapter Digital Communication Techniques of Avionics

1 Answer

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Correct choice is (d) Flash conversion

The explanation: R-2R, string and weighted current source converters are Digital to analog conversion methods whereas flash conversion is an analog to digital conversion method. Flash converter uses a voltage ladder along with a comparator to compare the reference voltage with the input voltages.

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