ad7147a-1acbz-r Analog Devices, Inc., ad7147a-1acbz-r Datasheet - Page 10

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

AD7147A
58,000
56,000
54,000
52,000
50,000
48,000
46,000
44,000
42,000
40,000
960
940
920
900
880
860
840
820
800
780
12
10
8
6
4
2
0
–45
–60
Figure 15. Shutdown Supply Current vs. Temperature
Figure 13. CDC Code vs. Capacitive Load on AC
–25
–40
0
Figure 14. Supply Current vs. Temperature
–20
–5
100
AC
SHIELD
15
0
TEMPERATURE (°C)
TEMPERATURE (°C)
20
200
CAPACITIVE LOAD (pF)
35
3.6V
3.3V
2.6V
40
55
300
3.3V
60
75
80
400
95
3.6V
100
SHIELD
2.6V
115
500
120
135
Rev. 0 | Page 10 of
68
160
140
120
100
120
100
Figure 17. Power Supply Square Wave Rejection, V
80
60
40
20
80
60
40
20
35
30
25
20
15
10
5
0
0
Figure 16. Power Supply Sine Wave Rejection, V
0
0
25mV
50mV
25mV
50mV
10,000
Figure 18. CDC Linearity, V
SQUARE WAVE FREQUENCY (Hz)
20,000
SINE WAVE FREQUENCY (Hz)
75mV
100mV
75mV
100mV
CDC OUTPUT CODE
30,000
125mV
150mV
125mV
150mV
40,000
CC
= 3.3 V
50,000
175mV
200mV
175mV
200mV
CC
CC
= 3.6 V
= 3.6 V
60,000