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ADS5547IRGZTG4 Datasheet(PDF) 46 Page - Texas Instruments |
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ADS5547IRGZTG4 Datasheet(HTML) 46 Page - Texas Instruments |
46 / 57 page www.ti.com DEFINITION OF SPECIFICATIONS Analog Bandwidth Aperture Delay Aperture Uncertainty (Jitter) Clock Pulse Width/Duty Cycle Maximum Conversion Rate Minimum Conversion Rate Differential Nonlinearity (DNL) Integral Nonlinearity (INL) Gain Error Offset Error Temperature Drift ADS5547 SLWS192A – NOVEMBER 2006 – REVISED MAY 2007 The analog input frequency at which the power of the fundamental is reduced by 3 dB with respect to the low frequency value. The delay in time between the rising edge of the input sampling clock and the actual time at which the sampling occurs. The sample-to-sample variation in aperture delay. The duty cycle of a clock signal is the ratio of the time the clock signal remains at a logic high (clock pulse width) to the period of the clock signal. Duty cycle is typically expressed as a percentage. A perfect differential sine-wave clock results in a 50% duty cycle. The maximum sampling rate at which certified operation is given. All parametric testing is performed at this sampling rate unless otherwise noted. The minimum sampling rate at which the ADC functions. An ideal ADC exhibits code transitions at analog input values spaced exactly 1 LSB apart. The DNL is the deviation of any single step from this ideal value, measured in units of LSBs The INL is the deviation of the ADC’s transfer function from a best fit line determined by a least squares curve fit of that transfer function, measured in units of LSBs. The gain error is the deviation of the ADC’s actual input full-scale range from its ideal value. The gain error is given as a percentage of the ideal input full-scale range. The offset error is the difference, given in number of LSBs, between the ADC’s actual average idle channel output code and the ideal average idle channel output code. This quantity is often mapped into mV. The temperature drift coefficient (with respect to gain error and offset error) specifies the change per degree Celsius of the parameter from TMIN to TMAX. It is calculated by dividing the maximum deviation of the parameter across the TMIN to TMAX range by the difference TMAX–TMIN. 46 Submit Documentation Feedback |
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