ad51-064z-0reel Analog Devices, Inc., ad51-064z-0reel Datasheet - Page 7

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ad51-064z-0reel

Manufacturer Part Number
ad51-064z-0reel
Description
Touch Screen Digitizer
Manufacturer
Analog Devices, Inc.
Datasheet
TERMINOLOGY
Integral Nonlinearity
This 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
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 (00…000) to
(00…001) from the ideal, that is, AGND + 1 LSB.
Gain Error
This is the deviation of the last code transition (111…110) to
(111…111) from the ideal (V
has been adjusted out.
REF
− 1 LSB) after the offset error
Rev. B | Page 7 of 20
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
This is a measure of the ohmic resistance between the drain and
source of the switch drivers.
AD7843

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