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AD8021 数据表(PDF) 12 Page - Analog Devices

部件名 AD8021
功能描述  Dual 8-,10-,12-Bit High Bandwidth Multiplying DACs with Serial Interface
PDF  32 Pages
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制造商  AD [Analog Devices]
网页  http://www.analog.com
标志 AD - Analog Devices

AD8021 数据表(HTML) 12 Page - Analog Devices

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AD5429/AD5439/AD5449
Rev. 0 | 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 18. 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
INPUT
CCOMP =1.8pF
AD8038 AMPLIFIER
ALL ON
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
ALL OFF
10
Figure 19. 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
AD8038 AMPLIFIER
Figure 20. 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 21. 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
AD8038 AMPLIFIER
CCOMP = 1.8pF
7FF TO 800H
800 TO 7FFH
VDD = 5V
VDD = 3V
VDD = 3V
VDD = 5V
Figure 22. 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
7FF TO 800H
800 TO 7FFH
VDD = 5V
VDD = 3V
VDD = 3V
VDD = 5V
TA = 25°C
VREF = 3.5V
AD8038 AMPLIFIER
CCOMP = 1.8pF
Figure 23. Midscale Transition, VREF = 3.5 V



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