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AD7873ARUZ-REEL7 Datasheet(PDF) 9 Page - Analog Devices |
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AD7873ARUZ-REEL7 Datasheet(HTML) 9 Page - Analog Devices |
9 / 29 page AD7873 Data Sheet Rev. F | Page 8 of 28 TERMINOLOGY Integral Nonlinearity Integral nonlinearity is the maximum deviation from a straight line passing through the endpoints of the ADC transfer function. The endpoints of the transfer function are zero scale, a point 1 LSB below the first code transition, and full scale, a point 1 LSB above the last code transition. Differential Nonlinearity Differential nonlinearity is the difference between the measured and the ideal 1 LSB change between any two adjacent codes in the ADC. Offset Error Offset error is the deviation of the first code transition (00…000) to (00…001) from the ideal, that is, AGND + 1 LSB. Gain Error Gain error is the deviation of the last code transition (111…110) to (111…111) from the ideal (that is, VREF – 1 LSB) after the offset error is adjusted out. Track-and-Hold Acquisition Time The track-and-hold amplifier enters the acquisition phase on the fifth falling edge of DCLK after the start bit has been detected. Three DCLK cycles are allowed for the track-and-hold acquisition time. The input signal is fully acquired to the 12-bit level within this time even with the maximum specified DCLK frequency. See the Analog Input section for more details. On Resistance On resistance is a measure of the ohmic resistance between the drain and source of the switch drivers. |
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