IEEE 1241-2000 pdf download

IEEE 1241-2000 pdf download.IEEE Standard for Terminology and Test Methods for Analog-to-Digital Converters.
3.1.58 precursor: In a step or pulse wavcform. any deviation from the baseline prior to the pulse
transition.
3.1.59 probability density function (PDF): For a random variable, x, a positive real monotonic non- decreasing function. f(x), which has the interpretation that /(.v) dx is the probability that the random variable, X, lies in the interval (x, x+dx).
3.1.60 quantization: A process in which the continuous range of values of an input signal is divided into non-overlapping sub-ranges, and to each sub-range a discrete value of the output is uniquely assigned. Whenever the signal value falls within a given sub-range. the output has the corresponding discrete value. (See IEEE 100 [B15].)
3.1.61 quantization error/quantization noise: The error caused by conversion of a variable having a
continuous range of values to a quantized form having only discrete values, as in analog-to-digital
conversion. The error is the difference between the original (analog) value and its quantized (digital)
representation. (See IEEE 100 LBI5].)
3.1.62 random noise: A non-deterministic fluctuation in the output of an analog-to-digital converter,
described by its frequency spectrum and its amplitude statistical properties. See also: noise.
3.1.63 record of data: A sequential collection of samples acquired by the analog-to-digital converter.
3.1.64 relatively prime: Describes integers whose greatest common divisor is I.
3.1.65 residuals: In curve fitting, the differences between the recorded data and the fitted function.
3.1.66 rise time (IR): The time for the signal to go from 10% to 90% of the transition range.
3.1.67 root-mean-square (rms): For a given set of data, the square root of the arithmetic mean of the squared values of each of the data.
3.1.68 root-sum-square (rss): For a given set of data, the square root of the sum of the squared values of each of the data.
3.1.69 sampling: The process of assigning discrete time values to a continuous time signal.
3.1.70 settling time: The time at which the step response enters and subsequently remains within a specified error band around the final value, measured from the mesial point (50%) of the response. The final value is defined to occur I s after the beginning of the step.
3.1.71 short-term settling time: Measured from the mesial point (50%) of the output. the time at which the step response enters and subsequently remains within a specified error band around the final value. The final value is defined to occur at a specified time less than I s after the beginning of the step.
3.1.72 signal-to-noise and distortion ratio (SINAD): For a pure sine wave input of specified amplitude and frequency, the ratio of the root-mean-square (rms) amplitude of the analog-to-digital converter output signal to the rms amplitude of the output noise, where noise is defined as above to include not only random errors but also nonlinear distortion and the effects of sampling time errors.
NOTE Signal-to-noise and distortion ratio in this standard is equivalent to signal-to-noise-ratio in IEEE Std 1057- 1994.
3.1.73 single-ended analog-to-digital converter: A non-differential analog-to-digital converter, i.e., one that does not subtract the signals at two input terminals. Such a converter may add multiple inputs.
3.1.74 slew limit: The value of output transition rate of change for which an increased amplitude input step signal causes no change.
3.1.75 small signal: A signal whose peak-to-peak amplitude spans no more than 10% of the full range of the analog-to-digital converter under test.
3.1.76 Signal to non-harmonic ratio (SNHR): For a pure sine-wave input of specified amplitude and frequency. the ratio of the root-mean-square (rrns) amplitude of the analog-to-digital converter output signal to the rms amplitude of the output noise which is not harmonic distortion.
3.1.77 SNR: Typically, this refers to ‘signal-to-noise” ratio. In the context of analog-to—digital converters, the term SNR is ambiguous. since it has been used to represent both signal-to-noise and distortion ratio (SINAD) and signal to non-harmonic ratio (SNHR); therefore, we will not use it in this standard.