Amateur Extra › E8 Signals and Emissions › E8A09
E8A09
How many different input levels can be encoded by an analog-to-digital converter with 8-bit resolution?
Pick an answer to check it.
Answer: D. 256
An n-bit converter has 2^n levels. For 8 bits, 2^8 = 256 levels. Amplifier gain does not change the number of codes.
Tip: Levels = 2 to the number of bits.