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AD7822BN 数据表(PDF) 9 Page - Analog Devices |
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AD7822BN 数据表(HTML) 9 Page - Analog Devices |
9 / 28 page AD7822/AD7825/AD7829 Rev. C | Page 9 of 28 Gain Error The deviation of the last code transition (1111 . . . 110) to (1111 . . . 111) from the ideal, that is, VREF − 1 LSB, after the offset error has been adjusted out. Gain Error Match The difference in gain error between any two channels. Track-and-Hold Acquisition Time The time required for the output of the track-and-hold amplifier to reach its final value, within ±1/2 LSB, after the point at which the track-and-hold returns to track mode. This happens approximately 120 ns after the falling edge of CONVST. It also applies to situations where a change in the selected input channel takes place or where there is a step input change on the input voltage applied to the selected VIN input of the AD7822/ AD7825/AD7829. It means that the user must wait for the duration of the track-and-hold acquisition time after a channel change/step input change to VIN before starting another conversion, to ensure that the part operates to specification. PSR (Power Supply Rejection) Variations in power supply affect the full-scale transition but not the converter linearity. Power supply rejection is the maximum change in the full-scale transition point due to a change in power supply voltage from the nominal value. |
类似零件编号 - AD7822BN |
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类似说明 - AD7822BN |
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