What is Flash ADC?
The fastest type of ADC, which compares the input against many comparators at once. N bits need 2ᴺ − 1 comparators, so the circuit grows rapidly with resolution.
Field: AD/DA conversion
Flash ADC in the explanations
A flash ADC compares the input against every threshold at once using 2ᴺ−1 comparators, so conversion finishes in a single comparison—the fastest architecture (several GS/s).
Which is a characteristic of a flash AD converter?A flash ADC compares the input with every threshold simultaneously, so N bits need 2ᴺ − 1 comparators—seven for 3 bits.
How many comparators does a 3-bit flash AD converter need?
Questions that mention Flash ADC (2)
Related terms
Comparator Aliasing Delta-sigma ADC DNL (differential nonlinearity) ENOB (effective number of bits) INL (integral nonlinearity) Jitter Missing code Noise shaping Nyquist frequency