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AD7394 Datasheet(Fiches technique) 7 Page - Analog Devices

Numéro de pièce AD7394
Description  3 V, Dual, Serial Input 12-/10-Bit DACs
Télécharger  12 Pages
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Fabricant  AD [Analog Devices]
Site Internet  http://www.analog.com
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 7 page
background image
AD7394/AD7395
–7–
REV. 0
CODE – Decimal
1.5
–1.5
0
1000
500
0
–0.5
0.5
1
–1
1500
2500
2000
3000
4000
3500
TA = +25 C, +85 C
VDD = 3V
VREF = 2.5V
TA = –55 C
Figure 4. AD7394 Integral Nonlinear-
ity Error vs. Code
TEMPCO – ppm/ C
35
0
40
30
20
15
10
5
25
26
38
28
30
32
34
36
SS = 200,
VDD = 2.7V
VREF = 2.5V
TA = +85 C TO –40 C
AD7395
Figure 7. Full-Scale Output Tempco
Histogram
FREQUENCY – Hz
10
8
0
1
10
100k
VDD = 5V
VREF = 2.5V
TA = +25 C
100
1k
10k
6
4
2
Figure 10. AD7394 Output Noise
Density vs. Frequency
Typical Performance Characteristics–
TOTAL UNADJUSTED ERROR – LSB
25
20
0
15
10
5
3
2
1
01
SS = 200 UNITS
TA = +25 C
VDD = 2.7V
VREF = 2.5V
AD7394
Figure 5. Total Unadjusted Error
Histogram
VREF – Volts
0.6
0.3
0
0 0.5
5
1
1.5
2
2.5
3
3.5
4
4.5
0.5
0.4
0.2
0.1
VDD = 5.0V
TA = +25 C
CODE = 768H
AD7394
Figure 8. Integral Nonlinearity Error
vs. VREF
VIN – Volts
140
100
135
120
115
110
105
130
125
0
0.5
3
1
1.5
2
2.5
VDD = 3V
VIN 3V TO 0V
VIN 0V TO 3V
AD7394
Figure 11. Supply Current vs. Logic
Input Voltage
TOTAL UNAJUSTED ERROR – LSB
50
40
0
–5
0
510
15
30
20
10
SS = 200 UNITS
TA = +25 C
VDD = 2.7V
VREF = 2.5V
AD7395
Figure 6. Total Unadjusted Error
Histogram
VREF – Volts
0 0.5
5
1
1.5
2 2.5
3
3.5
4
4.5
30
25
15
5
0
5
10
20
10
15
TA = +25 C
TOTAL UNADJUSTED
FULL SCALE ERROR
FULL SCALE ERROR
AD7394
Figure 9. Full-Scale Error vs. VREF
VDD – Volts
5
4.5
1
23
7
45
6
3
2.5
2
1.5
4
3.5
VLOGIC FROM LOW TO HIGH
VLOGIC FROM HIGH TO LOW
AD7394
Figure 12. Logic Threshold vs. Sup-
ply Voltage




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