Datasheet

AD7396/AD7397
–8–
REV. 0
FREQUENCY – Hz
GAIN – dB
0
–10
–20
–30
–40
–50
100 1k 10k 100k 1M
–5
–15
–25
–35
–45
V
DD
= +3V
CODE = FULL SCALE
Figure 13. Reference Multiplying
Gain vs. Frequency
V
DD
– V
2
LOGIC THRESHOLD – V
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
34 567
T
A
= +258C
V
LOGIC
FROM
LOW TO HIGH
V
LOGIC
FROM
HIGH TO LOW
Figure 16. Logic Threshold Voltage
vs. V
DD
TEMPERATURE – 8C
–40
I
DD
– mA
170
160
150
140
130
120
110
100
–200 204060
V
REF
= +2.5V
80
90
80
100 120 140
V
DD
= +3.6V, V
LOGIC
= +2.4V
V
DD
= +3V, V
LOGIC
= +3V
V
DD
= +5V, V
LOGIC
= +5V
Figure 19. I
DD
vs. Temperature
TIME – 2ms/DIV
V
OUT
– Volts
1.262
1.257
1.252
1.247
1.242
1.237
V
DD
= +5V
V
REF
= +2.5V
T
A
= +25 C
CODE = 800
H
TO 7FF
H
5mV/DIV
Figure 14. Midscale Transition
Performance
DV
OUT
– mV
–120
I
OUT
CURRENT SOURCING – mA
35
30
25
20
15
10
5
0
–100 –80 –60 –40 –20
V
REF
= +2.5V
T
A
= +258C
0
V
DD
= +5V
V
DD
= +3V
Figure 17. I
OUT
Source Current vs.
∆ V
OUT
V
REF
– Volts
0
I
DD
– mA
200
180
160
140
120
100
80
60
12345
T
A
= +258C
40
20
0
V
DD
= +3V
V
DD
= +5V
Figure 20. I
DD
vs. Reference Voltage
LOGIC INPUT – V
IN
(Volts)
0
I
DD
– mA
145
140
135
130
125
120
115
110
105
100
0.5 1 1.5 2 2.5 3
V
DD
= +3V
T
A
= +258C
V
IN
= +3V TO 0V
V
IN
= 0V TO +3V
Figure 15. I
DD
vs. Logic Input Voltage
DV
OUT
– mV
0
I
OUT
CURRENT SINKING – mA
45
40
35
30
25
20
15
10
24 6810
V
REF
= +2.5V
T
A
= +258C
12
5
0
V
DD
= +5V
V
DD
= +3V
Figure 18. I
OUT
Sink Current vs.
∆ V
OUT
TEMPERATURE – 8C
I
DD
_
SD
SHUTDOWN CURRENT – nA
1000
10
–40
100
1
–20
0
20 40 60 80 100 120 140
V
REF
= +2.5V
V
DD
= +5V
SHDN = 0V
Figure 21. Shutdown Current vs.
Temperature