參數資料
型號: AD7746ARUZ-REEL7
廠商: Analog Devices, Inc.
元件分類: 溫度/濕度傳感器
英文描述: 24-Bit Capacitance-to-Digital Converter with Temperature Sensor
中文描述: 24位的電容數字轉換器的溫度傳感器
文件頁數: 8/28頁
文件大?。?/td> 391K
代理商: AD7746ARUZ-REEL7
AD7745/AD7746
TYPICAL PERFORMANCE CHARACTERISTICS
100
Rev. 0 | Page 8 of 28
0
–5
5
0
INPUT CAPACITANCE (pF)
I
80
60
40
20
–4
–3
–2
–1
0
1
2
3
4
Figure 6. Capacitance Input Integral Nonlinearity,
V
DD
= 5 V, the Same Configuration as in Figure 31
2000
–3000
–50
150
0
TEMPERATURE (°C)
G
1000
0
–1000
–2000
–25
0
25
50
75
100
125
GAIN TC
–26ppm/°C
Figure 7. Capacitance Input Offset Drift vs. Temperature,
V
DD
= 5 V, CIN and EXC Pins Open Circuit
100
–100
–50
150
0
TEMPERATURE (°C)
O
75
50
25
0
–25
–50
–75
–25
0
25
50
75
100
125
Figure 8. Capacitance Input Gain Drift vs. Temperature,
V
DD
= 5 V, CIN(+) to EXC = 4 pF, the Same Configuration as in Figure 30
18
–2
0
500
0
CAPACITANCE CIN PIN TO GND (pF)
C
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, V
DD
= 2.7 V, 3 V, 3.3 V, and 5 V,
the Same Configuration as in Figure 33
18
–2
0
500
0
CAPACITANCE CIN PIN TO GND (pF)
C
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, V
DD
= 2.7 V, 3 V, 3.3 V, and 5 V,
the Same Configuration as in Figure 34
5
–1
0
500
0
CAPACITANCE EXC PIN TO GND (pF)
C
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, V
DD
= 2.7 V, 3 V, 3.3 V, and 5 V,
the Same Configuration as in Figure 34
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