Data Sheet
AD7147
Rev. D | Page 11 of 72
58000
40000
0
06
66
3-
0
63
ACSHIELD CAPACITIVE LOAD (pF)
CD
C
CO
DE
(
d
)
100
200
300
400
500
56000
54000
52000
50000
48000
46000
44000
42000
Figure 13. Output Code vs. Capacitive Load on ACSHIELD
960
780
–60
–40
–20
0
20
40
60
80
100
120
0
666
3-
0
13
TEMPERATURE (°C)
I CC
(A
)
940
920
900
880
860
840
820
800
3.3V
3.6V
2.6V
Figure 14. Supply Current vs. Temperature
12
0
–45
135
0
666
3-
0
14
TEMPERATURE (°C)
I CC
(A
)
10
8
6
4
2
–25
–5
1535557595
115
3.6V
2.6V
3.3V
Figure 15. Shutdown Supply Current vs. Temperature
160
0
25
50
100
200
400
800
1600
3200
6400
12800
25600
51200
10
2400
20
4800
40
9600
81
9200
164000
0
06
66
3-
06
4
SINE WAVE FREQUENCY (Hz)
CDC
NO
IS
E
p
-p
(
L
S
B)
140
120
100
80
60
40
20
25mV
75mV
125mV
175mV
50mV
100mV
150mV
200mV
Figure 16. Power Supply Sine Wave Rejection, VCC = 3.6 V
120
0
25
50
10
0
20
0
40
0
80
0
1600
3200
6400
12
800
25
600
51
200
102400
204800
409600
819200
164
0000
06
66
3-
06
5
SQUARE WAVE FREQUENCY (Hz)
C
DC
NO
IS
E
p
-p
(
L
S
B)
25mV
75mV
125mV
175mV
50mV
100mV
150mV
200mV
100
80
60
40
20
Figure 17. Power Supply Square Wave Rejection, VCC = 3.6 V
35
0
10000
20000
30000
40000
50000
60000
0
666
3-
0
16
CDC OUTPUT CODE
INP
UT
CAP
A
CI
T
ANC
E
(
p
F
)
30
25
20
15
10
5
Figure 18. CDC Linearity, VCC = 3.3 V