Sampling question?

Weight of the LSB, for MAX 1261

1.Assuming you have the MAX 1261 configured for 2.5v full scale (that is, the analog input range is 0-2.5v),what would the effective weight (in volts) of the Least Significant Bit?

2

Maximum input frequency for MAX 1261

If you have the MAX 1261 configured to use it’s internal clock, the datasheet indicates a conversion time of 3.6microSec. Assuming it takes an additional 625nS for acquisition, reading the data, and re-starting the ADC, what is the maximum effective fsample we can hope to achieve, and what maxium input frequency would we be able to resolve?