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AD9289 Datasheet(PDF) 8 Page - Analog Devices |
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AD9289 Datasheet(HTML) 8 Page - Analog Devices |
8 / 16 page AD9289 Preliminary Technical Data Rev. PrJ | Page 8 of 16 6/25/2004 MAXIMUM CONVERSION RATE The encode rate at which parametric testing is performed. OFFSET ERROR Offset error is the difference between the measured and ideal voltage at the analog input that produces the midscale code at the outputs. Offset error is given for the worst ADC. OFFSET MATCHING Expressed in mV. Computed using the following equation: min max OFF OFF hing OffsetMatc − = where OFFmax is the most positive offset error and OFFmin is the most negative offset error. OUTPUT PROPAGATION DELAY The delay between a differential crossing of CLK+ and CLK- and the time when all output data bits are within valid logic levels. NOISE (FOR ANY RANGE WITHIN THE ADC) − − = 10 10 * 001 . * dBFS dBc dBm Signal SNR FS noise Z V Where Z is the input impedance, FS is the full scale of the device for the frequency in question, SNR is the value for 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 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 components, 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 component may or may not be a harmonic. It also may be reported in dBc (i.e., degrades as signal level is lowered) or dBFS (i.e., 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. It also may be reported in dBc (i.e., degrades as signal level is lowered) or in dBFS (i.e., always relates 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 harmonic) reported in dBc. TRANSIENT RESPONSE TIME Transient response time is defined as 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 Out of range recovery time is 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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Descripción similar - AD9289 |
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