Datasheet

AD7392/AD7393
Rev. C | Page 9 of 20
100
95
90
85
80
75
70
65
60
55
50
0
V
LOGIC
FROM
0V TO 3V
V
LOGIC
FROM
3V TO 0V
3.02.52.01.51.00.5
01121-014
V
IN
(V)
SUPPLY CURRENT (µA)
AD7392
V
DD
= 3V
T
A
= 25°C
Figure 11. Supply Current vs. Logic Input Voltage
5.0
4.5
4.0
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
1765432
01121-015
SUPPLY VOLTAGE (V)
THRESHOLD VOLTAGE (V)
AD7392
CODE = 0xFFF
V
REF
= 2V
RS LOGIC VOLTAGE
VARIED
V
LOGIC
FROM
LOW TO HIGH
V
LOGIC
FROM
HIGH TO LOW
Figure 12. Logic Threshold vs. Supply Voltage
100
30
40
50
60
70
80
90
20
–55 –35 –15 5 25 45 65 85 105 125
01121-016
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
V
DD
= 5V, V
LOGIC
= 0V
V
DD
= 3.6V, V
LOGIC
= 2.4V
V
DD
= 3V, V
LOGIC
= 0V
AD7392
SAMPLE SIZE = 300 UNITS
Figure 13. Supply Current vs. Temperature
1000
800
600
400
200
0
1k 10k 100k 1M 10M
01121-017
CLOCK FREQUENCY (Hz)
SUPPLY CURRENT (µA)
a
b
c
d
a. V
DD
= 5.5V, CODE = 0x155
b. V
DD
= 5.5V, CODE = 0x3FF
c. V
DD
= 2.7V, CODE = 0x155
d. V
DD
= 2.7V, CODE = 0x355
AD7392
V
LOGIC
= 0V TO V
DD
TO 0V
V
REF
= 2.5V
T
A
= 25°C
Figure 14. Supply Current vs. Clock Frequency
60
50
40
30
20
10
0
10 100 1k 10k
01121-018
FREQUENCY (Hz)
PSRR (dB)
T
A
= 25°C
V
DD
= 5V ± 5%
V
DD
= 3V ± 5%
Figure 15. Power Supply Rejection Ratio vs. Frequency
40
30
20
10
0
054321
01121-019
V
OUT
(V)
I
OUT
(mA)
V
DD
= 5V
V
REF
= 3V
CODE = 0x000
Figure 16. I
OUT
at Zero Scale vs. V
OUT