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AD5426 Datasheet(PDF) 11 Page - Analog Devices

Part No. AD5426
Description  8-/10-/12-Bit High Bandwidth Multiplying DACs with Serial Interface
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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AD5426 Datasheet(HTML) 11 Page - Analog Devices

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Data Sheet
AD5426/AD5432/AD5443
Rev. G | Page 11 of 24
FREQUENCY (Hz)
100M
1
100
1k
10
10k
100k
1M
10M
3.5
3.0
2.0
2.5
1.5
1
0.5
0
TA = 25°C
AD5443
LOADING 010101010101
VCC = 5V
VCC = 3V
Figure 24. Supply Current vs. Update Rate
FREQUENCY (Hz)
100M
1
10
100
1k
10k
100k
1M
10M
6
0
–6
–12
–18
–24
–30
–36
–42
–48
–54
–60
–66
–72
–78
–84
–90
–96
–102
LOADING
ZS TO FS
ALL ON
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
ALL OFF
TA = 25°C
VDD = 5V
VREF = ±3.5V
CCOMP = 1.8pF
AD8038 AMPLIFIER
Figure 25. Reference Multiplying Bandwidth vs. Frequency and Code
FREQUENCY (Hz)
100M
1
10
100
1k
10k
100k
1M
10M
0.2
0
–0.2
–0.4
–0.6
–0.8
TA = 25°C
VDD = 5V
VREF = ±3.5V
CCOMP = 1.8pF
AD8038 AMPLIFIER
Figure 26. Reference Multiplying Bandwidth—All 1s Loaded
FREQUENCY (Hz)
100M
10k
100k
1M
10M
3
0
–3
–6
–9
TA = 25°C
VDD = 5V
AD8038 AMPLIFIER
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
VREF = ±2V, AD8038 CC 1.47pF
Figure 27. Reference Multiplying Bandwidth vs. Frequency and
Compensation Capacitor
TIME (ns)
300
0
50
100
150
200
250
0.060
0.030
0.040
0.050
0.010
0.020
–0.010
0
–0.020
TA = 25°C
VREF = 0V
AD8038 AMPLIFIER
CCOMP = 1.8pF
AD5443
VDD 3V, 0V REF
NRG = 0.088nVs
0x800 TO 0x7FF
VDD 5V, 0V REF
NRG = 0.119nVs,
0x800 TO 0x7FF
VDD 3V, 0V REF
NRG = 1.877nVs
0x7FF TO 0x800
VDD 5V, 0V REF
NRG = 2.049nVs
0x7FF TO 0x800
Figure 28. Midscale Transition VREF = 0 V
TIME (ns)
300
0
50
100
150
200
250
–1.70
–1.71
–1.72
–1.73
–1.74
–1.75
–1.76
TA = 25°C
VREF = 3.5V
AD8038 AMPLIFIER
CCOMP = 1.8pF
AD5443
VDD 3V, 3.5V REF
NRG = 0.647nVs
0x800 TO 0x7FF
VDD 5V, 3.5V REF, NRG = 0.364nVs,
0x800 TO 0x7FF
VDD 3V, 3.5V REF
NRG = 1.433nVs
0x7FF TO 0x800
VDD 5V, 3.5V REF
NRG = 1.184nVs
0x7FF TO 0x800
Figure 29. Midscale Transition VREF = 3.5 V


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