AD7142
TYPICAL PERFORMANCE CHARACTERISTICS
1000
980
DEVICE 1
960
SHUTDOWN I
CC
(碌A(chǔ))
2.45
2.30
2.15
2.00
DEVICE 1
1.85
1.70
1.55
1.40
2.7
DEVICE 3
DEVICE 2
940
DEVICE 3
DEVICE 2
I
CC
(碌A(chǔ))
920
900
880
860
840
820
2.7
05702-053
2.8
2.9
3.0
3.1
3.2
V
CC
(V)
3.3
3.4
3.5
3.6
2.8
2.9
3.0
3.1
3.2
V
CC
(V)
3.3
3.4
3.5
3.6
Figure 6. Supply Current vs. Supply Voltage
(V
CC
= AV
CC
+ DV
CC
, I
CC
= AI
CC
+ DI
CC
)
180
160
140
120
100
80
LP_CONV_DELAY = 600ms
05702-051
Figure 9. Shutdown Supply Current vs. Supply Voltage
(V
CC
= AV
CC
+ DV
CC
, I
CC
= AI
CC
+ DI
CC
)
1.10
LP_CONV_DELAY = 200ms
1.05
DEVICE 1
1.00
I
CC
(mA)
I
CC
(碌A(chǔ))
0.95
DEVICE 3
0.90
DEVICE 2
LP_CONV_DELAY = 400ms
LP_CONV_DELAY = 800ms
40
2.7
2.8
2.9
3.0
3.1
3.2
3.3
3.4
3.5
3.6
0.80
0
50
100
150
200
250
300
350
400
450
500
V
CC
(V)
CAPACITANCE LOAD ON SOURCE (pF)
Figure 7. Low Power Supply Current vs. Supply Voltage,
Decimation Rate = 256 (V
CC
= AV
CC
+ DV
CC
, I
CC
= AI
CC
+ DI
CC
)
120
Figure 10. Supply Current vs. Capacitive Load on SRC (I
CC
= AI
CC
+ DI
CC
)
16015
16010
16005
DEVICE 2
16000
15995
DEVICE 3
15990
15985
15980
DEVICE 1
100
LP_CONV_DELAY = 200ms
I
CC
(碌A(chǔ))
80
60
LP_CONV_DELAY = 400ms
40
LP_CONV_DELAY = 800ms
20
2.7
2.8
2.9
3.0
3.10
3.2
3.3
3.4
3.5
05702-050
0
50
100
150
200
250
300
350
400
450
500
CAPACITANCE LOAD ON SOURCE (pF)
3.6
V
CC
(V)
Figure 11. Output Code vs. Capacitive Load on SRC
Figure 8. Low Power Supply Current vs. Supply Voltage
Decimation Rate = 128 (V
CC
= AV
CC
+ DV
CC
, I
CC
= AI
CC
+ DI
CC
)
Rev. 0 | Page 9 of 68
05702-048
LP_CONV_DELAY = 600ms
CDC OUTPUT CODE
05702-049
60
0.85
05702-052