EVAL-AD7747EBZ Analog Devices Inc, EVAL-AD7747EBZ Datasheet - Page 10

• Manufacturer Part Number: EVAL-AD7747EBZ
• Description: 24-Bit Capacitance-to-Digital Converter Eval. Board
• Manufacturer: Analog Devices Inc

Specifications of EVAL-AD7747EBZ

• Silicon Manufacturer: Analog Devices
• Application Sub Type: Capacitance-to-Digital Converter
• Kit Application Type: Data Converter
• Silicon Core Number: AD7747
• Sensor Type: Touch, Capacitive
• Interface: I²C
• Voltage - Supply: 2.7 V ~ 5.25 V
• Embedded: No
• Utilized Ic / Part: AD7747
• Kit Contents: Board
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sensitivity: -
• Sensing Range: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

AD7747
–100
–150
–200
Figure 18. External Temperature Sensor Error vs. Temperature
–0.5
–1.0
–1.5
–2.0
Figure 17. Internal Temperature Sensor Error vs. Temperature
–0.5
–1.0
–1.5
–2.0
–2.5
–3.0
200
150
100
–50
2.0
1.5
1.0
0.5
1.0
0.5
50
0
0
0
–50
–50
0
Figure 16. CAPDAC Differential Nonlinearity (DNL)
–25
–25
8
16
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
25
25
24
CAPDAC CODE
50
50
32
75
75
40
100
100
48
125
125
56
150
150
64
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–100
–120
–100
–120
–100
–120
–20
–40
–60
–80
–20
–40
–60
–80
–20
–40
–60
–80
0
0
0
0
0
0
Figure 19. Capacitive Channel Frequency Response;
Figure 20. Capacitive Channel Frequency Response;
Figure 21. Voltage Channel Frequency Response;
100
50
25
200
Conversion Time = 122.1 ms
100
Conversion Time = 124 ms
Conversion Time = 22 ms
50
INPUT SIGNAL FREQUENCY (Hz)
INPUT SIGNAL FREQUENCY (Hz)
INPUT SIGNAL FREQUENCY (Hz)
300
150
75
400
200
500
100
600
250
125
700
150
300
800
175
350
900
200
400
1k