AD7391 데이터 시트보기 (PDF) - Analog Devices
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AD7391 Datasheet PDF : 12 Pages
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AD7390/AD7391–Typical Performance Characteristics
25
SS = 100 UNITS
TA = 25؇C
20 VDD = 2.7V
VREF = 2.5V
15
10
5
0
5.0 5.8 6.6 7.3 8.1 8.9 9.7 10.5 11.2 12.0
TOTAL UNADJUSTED ERROR – LSB
TPC 1. AD7390 Total Unadjusted
Error Histogram
100
SS = 300 UNITS
90
TA = 25؇C
80
VDD = 2.7V
VREF = 2.5V
70
60
50
40
30
20
10
0
–10 –3.3 3.3 10 16 23 30 36 43 50
TOTAL UNADJUSTED ERROR – LSB
TPC 2. AD7391 Total Unadjusted
Error Histogram
30
SS = 100 UNITS
TA=؊40؇C TO +85؇C
24 VDD = 2.7V
VREF = 2.5V
18
12
6
0
–33 –30 –26 –23 –20 –16 –13 –10 –6 –3 0
FULL-SCALE TEMPCO – ppm/ C
TPC 3. AD7391 Full-Scale Output
Tempco Histogram
16
VDD = 5V
14
VREF = 2.5V
TA = 25؇C
12
10
8
6
4
2
0
1
10
100
1k
10k 100k
FREQUENCY – Hz
TPC 4. AD7390 Voltage Noise
Density vs. Frequency
100
95
90 VLOGIC FROM
3.0V TO 0V
85
VLOGIC FROM
0V TO 3.0V
80
75
TA = 25؇C
VDD = 3.0V
70
65
60
55
50
0.0 0.5 1.0 1.5 2.0 2.5 3.0
VIN – V
TPC 5. AD7390 Supply Current vs.
Logic Input Voltage
5.0
CODE = FFFH
4.5 VREF = 2V
4.0 RS LOGIC VOLTAGE
VARIED
3.5
3.0
2.5 VLOGIC FROM
HIGH TO LOW
2.0
1.5
VLOGIC FROM
LOW TO HIGH
1.0
0.5
0.0
1
2
3
4
5
6
7
SUPPLY VOLTAGE – V
TPC 6. AD7390 Logic Threshold
vs. Supply Voltage
100
SAMPLE SIZE = 300 UNITS
90
80
VDD = 5.0V, VLOGIC = 0V
VDD = 3.6V, VLOGIC = 2.4V
70
60
50
40
VDD = 3.0V, VLOGIC = 0V
30
20
؊55 ؊35 ؊15 5 25 45 65 85 105 125
TEMPERATURE – ؇C
TPC 7. AD7390 Supply Current
vs. Temperature
1000 VLOGIC = 0V TO V DD TO 0V
VREF = 2.5V
TA = 25؇C
800
a. V DD = 5.5V, CODE = 155H
b. V DD = 5.5V, CODE = 3FFH
600 c. V DD = 2.7V, CODE = 155H
d. VDD = 2.7V, CODE = 355H
400
ab
200
dc
0
1k
10k
100k
1M
10M
CLOCK FREQUENCY – Hz
TPC 8. AD7391 Supply Current
vs. Clock Frequency
60
50
VDD = 5V ؎ 5%
40
VDD = 3V ؎ 5%
30
TA = 25؇C
20
10
0
10
100
1k
10k
FREQUENCY – Hz
TPC 9. Power Supply Rejection
vs. Frequency
–6–
REV. A
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