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AD7747 Datasheet(PDF) 11 Page - Analog Devices

Part # AD7747
Description  24-Bit Capacitance-to-Digital Converter
PDF  29 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7747 Datasheet(HTML) 11 Page - Analog Devices

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AD7747
Rev. 0 | Page 10 of 28
200
–200
064
CAPDAC CODE
150
100
50
0
–50
–100
–150
8
16
24
32404856
Figure 16. CAPDAC Differential Nonlinearity (DNL)
2.0
–2.0
–50
150
TEMPERATURE (°C)
1.5
1.0
0.5
0
–0.5
–1.0
–1.5
–25
0
25
50
75
100
125
Figure 17. Internal Temperature Sensor Error vs. Temperature
1.0
–3.0
–50
150
TEMPERATURE (°C)
0.5
0
–0.5
–1.0
–1.5
–2.0
–2.5
–25
0
25
50
75
100
125
Figure 18. External Temperature Sensor Error vs. Temperature
0
–120
01k
INPUT SIGNAL FREQUENCY (Hz)
–20
–40
–60
–80
–100
100
200
300
400
500
600
700
800
900
Figure 19. Capacitive Channel Frequency Response;
Conversion Time = 22 ms
0
–120
0
200
INPUT SIGNAL FREQUENCY (Hz)
–20
–40
–60
–80
–100
25
50
75
100
125
150
175
Figure 20. Capacitive Channel Frequency Response;
Conversion Time = 124 ms
0
–120
0
400
INPUT SIGNAL FREQUENCY (Hz)
–20
–40
–60
–80
–100
50
100
150
200
250
300
350
Figure 21. Voltage Channel Frequency Response;
Conversion Time = 122.1 ms



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