參數(shù)資料
型號(hào)： MB88111PFQ
廠商： FUJITSU LTD
元件分類： ADC
英文描述： A/D Converter (With 24-Channel Input at 10-bit Resolution)
中文描述： 24-CH 10-BIT SUCCESSIVE APPROXIMATION ADC, SERIAL ACCESS, PQFP44
封裝： PLASTIC, QFP-44
文件頁(yè)數(shù)： 22/26頁(yè)
文件大?。?/td> 169K
代理商： MB88111PFQ
22
MB88111
I
DEFINITIONS OF A/D CONVERTER TERMS
Resolution
Analog transition identifiable by the A/D converter
Linearity error
Deviation of the straight line drawn between the zero transition point (00 0000 0000
00 0000 0001) and
the full-scale transition point (11 1111 1110
11 1111 1111) of the device from actual conversion charac-
teristics
Differential linearity error
Deviation from the ideal input voltage required to shift output code by one LSB
Total error
Difference between actual and logical values. This error is caused by a zero transition error, full-scale transition
error, linearity error, quantum error, and by noise.
(Continued)
Ideal I/O characteristics
3FF
3FE
3FD
004
003
002
001
V
OT
(Ideal value)
1 LSB
(Ideal value)
V
FST
(Ideal value)
1.5 LSB
AVRH
AVRL
AVRL
AVRH
Analog input
Analog input
Total error
3FF
3FE
3FD
004
003
002
001
{1 LSB
×
(N–1)
+0.5 LSB}
V
NT
'
(Measured value)
Actual conversion
characteristics
Ideal characteristics
AVRH–AVRL
1024
[v]
[v]
[v]
V
FST
(Ideal value) = AVRH - 1.5 LSB
V
OT
(Ideal value) = 0.5 LSB
V
NT
'
– {1 LSB
×
(N–1) +0.5 LSB}
1 LSB
1 LSB (Ideal value) =
Total error of
0.5 LSB
D
Actual conversion
characteristics
D
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