AD7616BSTZ datasheet(23/51 Pages) AD

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AD7616

Data Sheet

Rev. 0 | Page 22 of 50

AC Common-Mode Rejection Ratio (AC CMRR)

AC CMRR is defined as the ratio of the power in the ADC

output at frequency, f, to the power of a sine wave applied to the

common-mode voltage of Vxx and VxxGND at frequency, fS.

AC CMRR (dB) = 10log(Pf/PfS)

where:

Pf is the power at frequency, f, in the ADC output.

PfS is the power at frequency, fS, in the ADC output.

Channel to Channel Isolation

Channel to channel isolation is a measure of the level of crosstalk

between all input channels. It is measured by applying a full-scale

sine wave signal, up to 160 kHz, to all unselected input channels

and then determining the degree to which the signal attenuates

in the selected channel with a 1 kHz sine wave signal applied.

Phase Delay

Phase delay is a measure of the absolute time delay between

when an input is sampled by the converter and when the result

associated with that sample is available to be read back from the

ADC, including delay induced by the analog front end of the

device.

Phase Delay Drift

Phase delay drift is the change in group delay per unit

temperature across the entire operating temperature of the

device.

Phase Delay Matching

Phase delay matching is the maximum phase delay seen

between any simultaneously sampled pair.

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