AD7142
Rev. A | Page 10 of 72
TYPICAL PERFORMANCE CHARACTERISTICS
05
70
2-
0
53
I CC
(
A
)
VCC (V)
820
860
840
920
900
880
940
960
980
1000
2.7
2.9
2.8
3.0
3.1
3.2
3.3
3.4
3.5
3.6
DEVICE 3
DEVICE 1
DEVICE 2
Figure 8. Supply Current vs. Supply Voltage
(VCC = AVCC + DVCC, ICC = AICC + DICC)
2.7
2.8
2.9
3.0
3.1
3.2
3.4
3.3
3.5
3.6
0
570
2-
0
51
I CC
(
A
)
VCC (V)
40
60
100
80
120
140
160
180
LP_CONV_DELAY = 200ms
LP_CONV_DELAY = 400ms
LP_CONV_DELAY = 600ms
LP_CONV_DELAY = 800ms
Figure 9. Low Power Supply Current vs. Supply Voltage,
Decimation Rate = 256 (VCC = AVCC + DVCC, ICC = AICC + DICC)
2.7
2.8
2.9
3.0
3.10
3.2
3.4
3.3
3.5
3.6
05
70
2-
0
50
I CC
(
A
)
VCC (V)
20
40
60
80
100
120
LP_CONV_DELAY = 200ms
LP_CONV_DELAY = 600ms
LP_CONV_DELAY = 800ms
LP_CONV_DELAY = 400ms
Figure 10. Low Power Supply Current vs. Supply Voltage
Decimation Rate = 128 (VCC = AVCC + DVCC, ICC = AICC + DICC)
1.40
1.55
1.70
1.85
2.00
2.15
2.30
2.45
2.7
2.9
2.8
3.0
3.1
3.2
3.3
3.4
3.5
3.6
S
HUT
DO
W
N
I
CC
(A
)
VCC (V)
05
70
2-
0
52
DEVICE 2
DEVICE 3
DEVICE 1
Figure 11. Shutdown Supply Current vs. Supply Voltage
(VCC = AVCC + DVCC, ICC = AICC + DICC)
1.10
1.05
1.00
0.95
0.90
0.85
0.80
0
50
100
150
200
250
300
350
400
450
500
05
70
2-
04
9
I CC
(m
A
)
CAPACITANCE LOAD ON SOURCE (pF)
DEVICE 3
DEVICE 2
DEVICE 1
Figure 12. Supply Current vs. Capacitive Load on SRC (ICC = AICC + DICC)
16015
16010
16005
16000
15995
15990
15985
15980
0
50
100
150
200
250
300
350
400
450
500
05
702
-04
8
CDC
O
UT
P
UT
CO
DE
CAPACITANCE LOAD ON SOURCE (pF)
DEVICE 3
DEVICE 2
DEVICE 1
Figure 13. Output Code vs. Capacitive Load on SRC