ADC and error with LSB

I'm studying analog to digital converters (ADC). I have a question about the least significant bit (LSB). If we have 10 bits and an analog range of 5 V, then the error would be $$\frac{5}{2^{10}} = 4.9 \text{mV} \, ,$$ But there are other errors that are all included in LSB. For example, suppose that I have a 2 LSB error, now the error will be simply 10 mV approximately for all the measure that are between 512 and 1024 (2.5 V and 5 V).

Is this correct?

• A hint about English: only use a question mark ? at the end of a question. A statement such as "I have a question about LSB" is not a question and should not have a question mark. – DanielSank Jun 12 at 16:36
• Consider to spell out acronyms. – Qmechanic Jun 12 at 17:29
• Would Electrical Engineering be a better home for this question? – Qmechanic Jun 12 at 17:30