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AD5440 Datasheet(PDF) 12 Page - Analog Devices

Part # AD5440
Description  Dual 8-/10-/12-Bit, High Bandwidth, Multiplying DACs with Parallel Interface
PDF  32 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD5440 Datasheet(HTML) 12 Page - Analog Devices

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AD5428/AD5440/AD5447
Data Sheet
Rev. C | Page 12 of 32
0
2
4
6
8
10
12
14
10k
1k
10
100
1
100k
1M
10M
100M
FREQUENCY (Hz)
TA = 25°C
LOADING ZS TO FS
VDD = 5V
VDD = 3V
VDD = 2.5V
Figure 19. Supply Current vs. Update Rate
–102
–66
–54
–42
–30
–18
–6
6
1
100
1k
10k
100k
1M
10M
100M
FREQUENCY (Hz)
TA = 25°C
LOADING
ZS TO FS
0
–60
–48
–36
–24
–12
–84
–72
–78
–90
–96
TA = 25°C
VDD = 5V
VREF = ±3.5V
CCOMP =1.8pF
AMP = AD8038
ALL ON
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
ALL OFF
10
Figure 20. Reference Multiplying Bandwidth vs. Frequency and Code
–0.8
–0.6
–0.4
–0.2
0
0.2
10k
1k
10
100
1
100k
1M
10M
100M
FREQUENCY (Hz)
TA = 25°C
VDD = 5V
VREF = ±3.5V
CCOMP = 1.8pF
AMP = AD8038
Figure 21. Reference Multiplying Bandwidth—All 1s Loaded
–9
–6
–3
0
3
10k
100k
1M
10M
100M
FREQUENCY (Hz)
TA = 25°C
VDD = 5V
VREF = ±2V, AD8038 CC 1.47pF
VREF = ±2V, AD8038 CC 1pF
VREF = ±0.15V, AD8038 CC 1pF
VREF = ±0.15V, AD8038 CC 1.47pF
VREF = ±3.51V, AD8038 CC 1.8pF
Figure 22. Reference Multiplying Bandwidth vs. Frequency and
Compensation Capacitor
–0.010
–0.005
0.005
0.025
0.035
0.045
0.015
0
0.020
0.030
0.040
0.010
0
20
40
60
80
100
120
140
160
180
200
TIME (ns)
TA = 25°C
VREF = 0V
AMP = AD8038
CCOMP = 1.8pF
0x7FF TO 0x800
0x800 TO 0x7FF
VDD = 5V
VDD = 3V
VDD = 3V
VDD = 5V
Figure 23. Midscale Transition, VREF = 0 V
0
20
40
60
80
100
120
140
160
180
200
TIME (ns)
–1.77
–1.76
–1.75
–1.74
–1.73
–1.72
–1.71
–1.70
–1.69
–1.68
0x7FF TO 0x800
0x800 TO 0x7FF
VDD = 5V
VDD = 3V
VDD = 3V
VDD = 5V
TA = 25°C
VREF = 3.5V
AMP = AD8038
CCOMP = 1.8pF
Figure 24. Midscale Transition, VREF = 3.5 V



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