ad7147a-1acbz-r Analog Devices, Inc., ad7147a-1acbz-r Datasheet - Page 9

• Manufacturer Part Number: ad7147a-1acbz-r
• Description: Captouch Programmable Controller For Single-electrode Capacitance Sensors
• Manufacturer: Analog Devices, Inc.

TYPICAL PERFORMANCE CHARACTERISTICS
0.12
0.10
0.08
0.06
0.04
0.02
935
915
895
875
855
835
815
795
180
160
140
120
100
80
60
40
20
0
0
2.6
2.5
2.5
Figure 8. Low Power Supply Current vs. Supply Voltage,
Figure 9. Low Power Supply Current vs. Supply Voltage,
2.7
Figure 7. Supply Current vs. Supply Voltage
DECIMATION = 128
2.7
2.7
2.8
2.9
Decimation Rate = 256
Decimation Rate = 128
DECIMATION = 64
2.9
2.9
200ms
400ms
600ms
800ms
200ms
400ms
3.0
3.1
V
V
V
CC
CC
CC
3.1
3.1
(V)
(V)
(V)
3.2
3.3
600ms
800ms
3.3
3.3
DECIMATION = 256
3.4
3.5
3.5
3.5
3.6
3.7
3.7
3.7
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8
1150
1100
1050
1000
950
900
70
60
50
40
30
20
10
2.5
2.0
1.5
1.0
0.5
0
2.5
Figure 10. Low Power Supply Current vs. Supply Voltage,
0
Figure 12. Supply Current vs. Capacitive Load on AC
2.7
Figure 11. Shutdown Supply Current vs. Supply Voltage
0
2.8
2.7
2.9
100
AC
Decimation Rate = 64
SHIELD
3.0
2.9
200ms
400ms
200
CAPACITIVE LOAD (pF)
3.1
V
V
CC
3.1
CC
(V)
3.2
800ms
(V)
300
3.3
3.3
3.4
400
3.5
3.5
600ms
AD7147A
SHIELD
500
3.6
3.7