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AD15452 Datasheet(PDF) 9 Page - Analog Devices |
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AD15452 Datasheet(HTML) 9 Page - Analog Devices |
9 / 16 page AD15452 Rev. 0 | Page 9 of 16 Offset Matching Expressed in mV. Computed using the following equation: OffsetMatching = OFFMAX − OFFMIN where: OFFMAX is the most positive offset error. OFFMIN is the most negative offset error. 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. Output Propagation Delay The delay between the clock logic threshold and the time when all bits are within valid logic levels. Power Supply Rejection Ratio (PSRR) PSRR is the measure of change in a given supply relative to the amount of error seen on the ADC reconstructed output. This is measured in decibels based on the spurious feedthrough of the device. Signal-to-Noise and Distortion (SINAD) Ratio SINAD is the ratio of the rms value of the measured input signal to the rms sum of all other spectral components below the Nyquist frequency, including harmonics but excluding dc. The value for SINAD is expressed in decibels. Signal-to-Noise Ratio (SNR) SNR is the ratio of the rms value of the measured input signal to the rms sum of all other spectral components below the Nyquist frequency, excluding the first six harmonics and dc. The value for SNR is expressed in decibels. Spurious-Free Dynamic Range (SFDR) SFDR is the difference in dB between the rms amplitude of the input signal and the peak spurious signal. Temperature Drift The temperature drift for offset error and gain error specifies the maximum change from the initial (25°C) value to the value at TMIN or TMAX. 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 can be an IMD product. It may be reported in dBc (that is, degrades as signal levels are lowered) or in dBFS (always related back to converter full scale). |
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