Datasheet

AD7142
Rev. A | Page 10 of 72
TYPICAL PERFORMANCE CHARACTERISTICS
05702-053
I
CC
(µA)
V
CC
(V)
820
860
840
920
900
880
940
960
980
1000
2.7 2.92.8 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
(V
CC
= AV
CC
+ DV
CC
, I
CC
= AI
CC
+ DI
CC
)
2.7 2.8 2.9 3.0 3.1 3.2 3.43.3 3.5 3.6
05702-051
I
CC
(µA)
V
CC
(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 (V
CC
= AV
CC
+ DV
CC
, I
CC
= AI
CC
+ DI
CC
)
2.7 2.8 2.9 3.0 3.10 3.2 3.43.3 3.5 3.6
05702-050
I
CC
(µA)
V
CC
(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 (V
CC
= AV
CC
+ DV
CC
, I
CC
= AI
CC
+ DI
CC
)
1.40
1.55
1.70
1.85
2.00
2.15
2.30
2.45
2.7 2.92.8 3.0 3.1 3.2 3.3 3.4 3.5 3.6
SHUTDOWN I
CC
(µA)
V
CC
(V)
05702-052
DEVICE 2
DEVICE 3
DEVICE 1
Figure 11. Shutdown Supply Current vs. Supply Voltage
(V
CC
= AV
CC
+ DV
CC
, I
CC
= AI
CC
+ DI
CC
)
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
05702-049
I
CC
(mA)
CAPACITANCE LOAD ON SOURCE (pF)
DEVICE 3
DEVICE 2
DEVICE 1
Figure 12. Supply Current vs. Capacitive Load on SRC (I
CC
= AI
CC
+ DI
CC
)
16015
16010
16005
16000
15995
15990
15985
15980
0 50 100 150 200 250 300 350 400 450 500
05702-048
CDC OUTPUT CODE
CAPACITANCE LOAD ON SOURCE (pF)
DEVICE 3
DEVICE 2
DEVICE 1
Figure 13. Output Code vs. Capacitive Load on SRC