AD9411SLASHPCB datasheet(11/28 Pages) AD

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AD9411

Rev. A | Page 11 of 28

Noise (for Any Range within the ADC)

Calculated as follows:

⎟

⎠

⎞

⎜

⎝

⎛

−

001

dBFS

dBc

dBM

NOISE

Signal

SNR

where Z is the input impedance, FS is the full scale of the device

for the frequency in question, SNR is the value of the particular

input level, and Signal is the signal level within the ADC reported

in dB below full scale. This value includes both thermal and

quantization noise.

Power Supply Rejection Ratio (PSRR)

The ratio of a change in input offset voltage to a change in

power supply voltage.

Signal-to-Noise-and-Distortion (SINAD)

The ratio of the rms signal amplitude (set 1 dB below full scale)

to the rms value of the sum of all other spectral components,

including harmonics but excluding dc.

Signal-to-Noise Ratio (without Harmonics)

The ratio of the rms signal amplitude (set at 1 dB below full

scale) to the rms value of the sum of all other spectral compo-

nents, excluding the first five harmonics and dc.

Spurious-Free Dynamic Range (SFDR)

The ratio of the rms signal amplitude to the rms value of the

peak spurious spectral component. The peak spurious compo-

nent may or may not be a harmonic. May be reported in dBc

(i.e., degrades as signal level is lowered) or dBFS (always related

back to converter full scale).

Two-Tone Intermodulation Distortion Rejection

The ratio of the rms value of either input tone to the rms value of

the worst third-order intermodulation product, reported in dBc.

Two-Tone SFDR

The ratio of the rms value of either input tone to the rms value

of the peak spurious component. The peak spurious component

may or may not be an IMD product. May be reported in dBc

(i.e., degrades as signal level is lowered) or in dBFS (always

related back to converter full scale).

Worst Other Spur

The ratio of the rms signal amplitude to the rms value of the

worst spurious component (excluding the second and third

harmonics) reported in dBc.

Transient Response Time

The time it takes for the ADC to reacquire the analog input

after a transient from 10% above negative full scale to 10%

below positive full scale.

Out-of-Range Recovery Time

The time it takes for the ADC to reacquire the analog input

after a transient from 10% above positive full scale to 10% above

negative full scale, or from 10% below negative full scale to 10%

below positive full scale.

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