Hi PRASANTH S, sampling frequency = 1/(Sampling time + Conversion time). to get 200ksps, sampling time = 8 ADC12CLK cycles = 8 x (1/4.2MHz) Conersion time = 13 x ADC12DIV x 1/fadc12clk = 13 x (1/4.2MHz) Then Sampling frequency = 1/5us = 200k. please refer to 5.37 12-Bit ADC, Timing Parameters in datasheet. what's the dc voltage you are sampling and what's the range you have got from adc result? KC
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