Part Number: ADS1258-EP It have to characterize the 24 bits ADC ADS1258-EP . It is wanted to get the best conditions for measuring DC levels with minimum noise. From datasheet page 22 Table 4. I see that you have characterize ENOB of 21.6 bits, Noise Free resolution with 18.9 with Vref=4.096, chop=0, Delay=0, inputs shorted and 2048 sample size. I suppose fixe channel. However, the client wants to characterize noise in auto scan mode (not fixed) with DRATE=00, DLY=111 (maximum), fclk=12.5MHz, chop=1 and from actual DC levels (not short-circuit). Effective data rate of 420SPS. Do you think this change of conditions will increase too much the noise performance from table 4 last row (ENOB=21.6bits)? Thanks in advance Sonia
↧
