參數(shù)資料
型號(hào): EVAL-AD7879-1EBZ
廠商: Analog Devices Inc
文件頁數(shù): 5/41頁
文件大?。?/td> 0K
描述: BOARD EVALUATION FOR AD7879-1
標(biāo)準(zhǔn)包裝: 1
主要目的: 接口,觸摸屏控制器
嵌入式:
已用 IC / 零件: AD7879-1
主要屬性: 4 線電阻式觸控屏控制器,I²C 和 SPI 接口
次要屬性: 圖形用戶界面,USB 接口
已供物品: 板,線纜,CD,觸控屏
AD7879/AD7889
Rev. C | Page 12 of 40
TERMINOLOGY
Differential Nonlinearity (DNL)
DNL is the difference between the measured and the ideal
1 LSB change between any two adjacent codes in the ADC.
Integral Nonlinearity (INL)
INL 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 at 1 LSB below
the first code transition and full scale at 1 LSB above the last
code transition.
Gain Error
Gain error is the deviation of the last code transition
(111 … 110 to 111 … 111) from the ideal (VREF 1 LSB)
after the offset error has been calibrated out.
Offset Error
Offset error is the deviation of the first code transition
(00 … 000 to 00 … 001) from the ideal (AGND + 1 LSB).
On Resistance
On resistance is a measure of the ohmic resistance between the
drain and the source of the switch drivers.
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