Bits + reference voltage → LSB size, counts, ideal SNR — plus code ↔ voltage conversion.

What the numbers mean

An N-bit converter divides the reference span into $2^{N}$ steps, so one LSB equals

LSB = \frac{V _{ref}}{2 ^{N}}

The ideal signal-to-noise ratio of a perfect N-bit ADC with a full-scale sine input is

SNR = 6.02 N + 1.76 dB

— quantization noise alone. Real converters specify an effective number of bits (ENOB) below N; check the datasheet's SINAD figure. For high-resolution measurements remember that one LSB of a 24-bit ADC at 2.5 V is ~150 nV — your layout and reference noise matter more than the bit count.

ADC Resolution Calculator

What the numbers mean