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AD7147 Datasheet(PDF) 11 Page - Analog Devices

Part # AD7147
Description  CapTouch Programmable Controller for Single-Electrode Capacitance Sensors
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7147 Datasheet(HTML) 11 Page - Analog Devices

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AD7147
Data Sheet
Rev. D | Page 10 of 72
TYPICAL PERFORMANCE CHARACTERISTICS
935
795
2.6
3.7
VCC (V)
915
895
875
855
835
815
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
3.6
DECIMATION = 256
DECIMATION = 128
DECIMATION = 64
Figure 7. Supply Current vs. Supply Voltage
180
0
2.5
3.7
VCC (V)
160
140
120
100
80
60
40
20
200ms
400ms
600ms
800ms
2.7
2.9
3.1
3.3
3.5
Figure 8. Low Power Supply Current vs. Supply Voltage,
Decimation Rate = 256
0.12
0
2.5
3.7
VCC (V)
0.10
0.08
0.06
0.04
0.02
400ms
800ms
600ms
200ms
2.72.93.13.33.5
Figure 9. Low Power Supply Current vs. Supply Voltage,
Decimation Rate = 128
70
0
VCC (V)
60
50
40
30
20
10
600ms
800ms
200ms
400ms
2.5
3.7
2.7
2.9
3.1
3.3
3.5
Figure 10. Low Power Supply Current vs. Supply Voltage,
Decimation Rate = 64
2.5
0
2.7
VCC (V)
2.0
1.5
1.0
0.5
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
3.6
Figure 11. Shutdown Supply Current vs. Supply Voltage
1150
900
0
ACSHIELD CAPACITIVE LOAD (pF)
1100
1050
1000
950
100
200
300
400
500
Figure 12. Supply Current vs. Capacitive Load on ACSHIELD


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