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AD7148 Datasheet(PDF) 9 Page - Analog Devices

Part # AD7148
Description  Programmable Touch Controller for Single Electrode Capacitance Sensors
PDF  56 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7148 Datasheet(HTML) 9 Page - Analog Devices

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AD7148
Rev. 0 | Page 9 of 56
58000
40000
0
ACSHIELD CAPACITIVE LOAD (pF)
100
200
300
400
500
56000
54000
52000
50000
48000
46000
44000
42000
Figure 11. CDC Output Code vs. Capacitive Load on ACSHIELD
960
780
–60
–40
–20
0
20
40
60
80
100
120
TEMPERATURE (°C)
940
920
900
880
860
840
820
800
3.3V
3.6V
2.6V
Figure 12. Supply Current vs. Temperature
12
0
–45
135
TEMPERATURE (°C)
10
8
6
4
2
–25
–51535
557595
115
3.6V
2.6V
3.3V
Figure 13. Shutdown Supply Current vs. Temperature
160
0
SINE WAVE FREQUENCY (Hz)
140
120
100
80
60
40
20
25mV
75mV
125mV
175mV
50mV
100mV
150mV
200mV
Figure 14. Power Supply Sine Wave Rejection, VCC = 3.6 V
35
0
0
10000
20000
30000
40000
50000
60000
CDC OUTPUT CODE
30
25
20
15
10
5
Figure 15. CDC Linearity, VCC = 3.3 V



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