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參數資料
型號: AD7873BCP
廠商: ANALOG DEVICES INC
元件分類: 消費家電
英文描述: Touch Screen Digitizer
中文描述: SPECIALTY CONSUMER CIRCUIT, QCC16
封裝: 4 X 4 MM, MO-220VGGC, LFCSP-16
文件頁數: 10/28頁
文件大小: 657K
代理商: AD7873BCP
AD7873
Rev. D | Page 10 of 28
0.5
1.5
2.5
3.5
4.5
5.5
6.5
7.5
R
μ
A
70
55
25
40
10
85
100
115
130
SAMPLE RATE (kHz)
0
Figure 11. Reference Current vs. Sample Rate
Y+
X+
X–
Y–
4
5
6
7
8
9
10
R
O
)
0
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
+V
CC
(V)
Figure 12. Switch On Resistance vs. +V
CC
(X+, Y+: +V
CC
to Pin; X-, Y-: Pin to GND)
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
2.0
E
15
35
55
75
95
115
135
155
175
195
SAMPLING RATE (kSPS)
0
INL: R = 2k
INL: R = 500
DNL: R = 2k
DNL: R = 500
Figure 13. Maximum Sampling Rate vs. R
IN
2
4
6
5
3
8
7
R
μ
A
10
9
12
11
14
13
0
20
–40
–20
40
60
80
TEMPERATURE (°C)
0
Figure 14. Reference Current vs. Temperature
Y+
X+
X–
Y–
3
4
5
6
7
8
9
R
O
)
0
–40
–20
0
20
40
60
80
100
TEMPERATURE (°C)
Figure 15. Switch On Resistance vs. Temperature
(X+, Y+: +VCC to Pin; X-, Y-: Pin to GND)
2.4988
2.4990
2.4992
2.4994
2.4996
2.4998
2.5000
2.5002
2.5004
2.5006
I
R
TEMPERATURE (°C)
0
–40
–30 –20 –10
0
10
20
30
40
50
60
70
80
Figure 16. Internal V
REF
vs. Temperature
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