參數(shù)資料
型號： EVAL-AD7746EBZ
廠商： Analog Devices Inc
文件頁數(shù)： 27/28頁
文件大?。?/td> 0K
描述： BOARD EVALUATION FOR AD7746
標(biāo)準(zhǔn)包裝： 1
傳感器類型： 觸摸，電容式
接口： I²C
電源電壓： 2.7 V ~ 5.25 V
嵌入式： 否
已供物品： 板，纜線，CD
已用 IC / 零件： AD7746
產(chǎn)品目錄頁面： 781 (CN2011-ZH PDF)
相關(guān)產(chǎn)品： AD7746ARUZ-ND - IC CONV 2CH CAP TO DGTL 16-TSSOP
AD7746ARUZ-REEL7-ND - IC CONV 2CH CAP TO DGTL 16-TSSOP
AD7746ARUZ-REEL-ND - IC CONV 2CH CAP TO DGTL 16-TSSOP
AD7745/AD7746
Rev. 0 | Page 8 of 28
TYPICAL PERFORMANCE CHARACTERISTICS
100
0
–5
5
05468-014
INPUT CAPACITANCE (pF)
INL
(ppm)
80
60
40
20
–4
–3
–2
–1
0
1
2
3
4
Figure 6. Capacitance Input Integral Nonlinearity,
VDD = 5 V, the Same Configuration as in Figure 31
2000
–3000
–50
150
05468-015
TEMPERATURE (°C)
GAIN
E
RROR
(ppm)
1000
0
–1000
–2000
–25
0
25
50
75
100
125
GAIN TC
≈ –26ppm/°C
Figure 7. Capacitance Input Offset Drift vs. Temperature,
VDD = 5 V, CIN and EXC Pins Open Circuit
100
–100
–50
150
05468-016
TEMPERATURE (°C)
OFFS
E
T
E
RROR
(a
F)
75
50
25
0
–25
–50
–75
–25
0
25
50
75
100
125
Figure 8. Capacitance Input Gain Drift vs. Temperature,
VDD = 5 V, CIN(+) to EXC = 4 pF, the Same Configuration as in Figure 30
18
–2
0
500
05468-017
CAPACITANCE CIN PIN TO GND (pF)
CAP
ACITANCE
E
RROR
(fF)
16
14
12
10
8
6
4
2
0
50
100
150
200
250
300
350
400
450
2.7V
3V
5V
3.3V
Figure 9. Capacitance Input Error vs. Capacitance between CIN and GND.
CIN(+) to EXC = 4 pF, CIN() to EXC = 0 pF, VDD = 2.7 V, 3 V, 3.3 V, and 5 V,
the Same Configuration as in Figure 33
18
–2
0
500
05468-018
CAPACITANCE CIN PIN TO GND (pF)
CAP
ACITANCE
E
RROR
(fF)
16
14
12
10
8
6
4
2
0
50
100
150
200
250
300
350
400
450
2.7V
3V
3.3V
5V
Figure 10. Capacitance Input Error vs. Capacitance between CIN and GND,
CIN(+) to EXC = 21 pF, CIN() to EXC = 23 pF, VDD = 2.7 V, 3 V, 3.3 V, and 5 V,
the Same Configuration as in Figure 34
5
–1
0
500
05468-019
CAPACITANCE EXC PIN TO GND (pF)
CAP
ACITANCE
E
RROR
(fF)
4
3
2
1
0
50
100
150
200
250
300
350
400
450
2.7V
3V
5V
3.3V
Figure 11. Capacitance Input Error vs. Capacitance between EXC and GND,
CIN(+) to EXC = 21 pF, CIN() to EXC = 23 pF, VDD = 2.7 V, 3 V, 3.3 V, and 5 V,
the Same Configuration as in Figure 34
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