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AD7416ARZ Datasheet(Fiches technique) 10 Page - Analog Devices

Numéro de pièce AD7416ARZ
Description  10-Bit Digital Temperature Sensor (AD7416) and Four Single-Channel ADCs
Télécharger  24 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
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 10 page
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AD7416/AD7417/AD7418
Rev. I | Page 10 of 24
TERMINOLOGY
Relative Accuracy
Relative accuracy or endpoint nonlinearity is the maximum
deviation from a straight line passing through the endpoints of
the ADC transfer function.
Differential Nonlinearity
This is the difference between the measured and the ideal 1 LSB
change between any two adjacent codes in the ADC.
Offset Error
This is the deviation of the first code transition (0000…000) to
(0000…001) from the ideal, that is, GND + 1 LSB.
Offset Error Match
This is the difference in offset error between any two channels.
Gain Error
This is 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
This is the difference in gain error between any two channels.
Track-and-Hold Acquisition Time
Track-and-hold acquisition time is the time required for the
output of the track-and-hold amplifier to reach its final value,
within ±½ LSB, after the end of conversion (the point at which
the track-and-hold returns to track mode). 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 AIN input of the AD7417 or AD7418. It
means that the user must wait for the duration of the track-and-
hold acquisition time after the end of conversion, or after a
channel change or step input change to AIN before starting
another conversion, to ensure that the part operates to
specification.




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