Flash analog-to-digital converters, also known as parallel ADCs, are the fastest way to convert an analog signal to a digital signal. Flash ADCs are ideal for applications requiring very large bandwidth, but they consume more power and much bigger in size than other ADC architectures. A Flash converter requires a huge number of comparators compared to other ADCs, especially as the resolution increases. A Flash converter requires 2n-1 comparators for an n-bit conversion.
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