參數(shù)資料
型號(hào): EVAL-AD7843CB
廠商: Analog Devices, Inc.
英文描述: Touch Screen Digitizer
中文描述: 觸摸屏數(shù)字轉(zhuǎn)換器
文件頁(yè)數(shù): 7/16頁(yè)
文件大?。?/td> 193K
代理商: EVAL-AD7843CB
REV. 0
AD7843
–7–
SAMPLE RATE
kHz
7.5
R
130
3.5
2.5
1.5
0.5
115
85
70
55
40
25
10
6.5
5.5
4.5
100
TPC 7. Reference Current vs. Sample Rate
+V
CC
V
10
R
O
5.5
7
6
5
4
2.0
4.5
4.0
3.5
3.0
2.5
9
8
5.0
Y+
X+
X
Y
TPC 8. Switch-On-Resistance vs. +V
CC
(X+, Y+: +V
CC
to
Pin; X–, Y–: Pin to GND)
SAMPLING RATE
kSPS
2.0
E
195
1.0
0.2
0
175
115
95
75
55
35
15
1.4
1.2
135
155
0.4
0.6
0.8
1.6
1.8
INL: R = 2k
INL: R = 500
DNL: R = 500
DNL: R = 2k
TPC 9. Maximum Sampling Rate vs. R
IN
TEMPERATURE
C
14
R
6
4
3
2
40
60
40
20
0
20
10
8
80
12
13
5
9
7
11
TPC 10. Reference Current vs. Temperature
TEMPERATURE
C
9
R
O
100
6
5
4
3
40
60
40
20
0
20
8
7
80
Y+
X+
X
Y
TPC 11. Switch-On-Resistance vs. Temperature (X+, Y+:
+V
CC
to Pin; X–, Y–: Pin to GND)
FREQUENCY
kHz
0
S
60.0
60
80
100
120
52.5
45.0
30.0
22.5
15.0
7.50
0
20
40
37.5
f
SAMPLE
= 125kHz
f
SNR = 68.34dB
TPC 12. Auxiliary Channel Dynamic Performance
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