AD10200
DEFINITION OF SPECIFICATIONS
Analog Bandwidth
The analog input frequency at which the spectral power of the
fundamental frequency (as determined by the FFT analysis) is
reduced by 3 dB.
Overvoltage Recovery Time
The amount of time required for the converter to recover to
0.02% accuracy after an analog input signal of the specified
percentage of full scale is reduced to midscale.
Power Supply Rejection Ratio
Aperture Delay
The ratio of a change in output offset voltage to a change in
power supply voltage.
The delay between the 50% point on the rising edge of the
ENCODE command and the instant at which the analog input
is sampled.
Signal-to-Noise-and-Distortion (SINAD)
The ratio of the rms signal amplitude (set a 1 dB below full scale)
to the rms value of the sum of all other spectral components,
excluding the first five harmonics and dc. [May be reported in
dBc (i.e., degrades as signal levels is lowered) or in dBFS (always
related back to converter full scale)].
Aperture Uncertainty (Jitter)
The sample-to-sample variation in aperture delay.
Differential Nonlinearity
The deviation of any code from an ideal 1 LSB step.
Signal-to-Noise Ratio (without Harmonics)
Encode Pulsewidth/Duty Cycle
The ratio of the rms signal amplitude (set a I dB below full
scale) to the rms value of the sum of all other spectral compo-
nents, excluding the first five harmonics and dc. [May be
reported in dBc (i.e., degrades as signal levels is lowered) or in
dBFS (always related back to converter full scale).]
Pulsewidth high is the minimum amount of time that the
ENCODE pulse should be left in Logic “1” state to achieve
rated performance; pulsewidth low is the minimum time
ENCODE pulse should be left in low state. At a given clock
rate, these specs define an acceptable Encode duty cycle.
Spurious-Free Dynamic Range
Harmonic Distortion
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 levels is lowered) or in dBFS (always
related back to converter full scale).]
The ratio of the rms signal amplitude to the rms value of the
worst harmonic component.
Integral Nonlinearity
The deviation of the transfer function from a reference line
measured in fractions of 1 LSB using a “best straight line”
determined by a least square curve fit.
Transient Response
The time required for the converter to achieve 0.02% accu-
racy when a one-half full-scale step function is applied to the
analog input.
Minimum Conversion Rate
The encode rate at which the SNR of the lowest analog signal
frequency drops by no more that 3 dB below the guaranteed limit.
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.
Maximum Conversion Rate
The encode rate at which parametric testing is performed.
Output Propagation Delay
Voltage Standing-Wave Ratio (VSWR)
The ratio of the amplitude of the elective field at a voltage maxi-
mum to that at an adjacent voltage minimum.
The delay between the 50% point of the rising edge of ENCODE
command and the time when all output data bits are within
valid logic levels.
–6–
REV. 0
ADI [ ADI ]
