AD5426 Analog Devices, AD5426 Datasheet - Page 11

• Manufacturer Part Number: AD5426
• Description: High Bandwidth CMOS 8-Bit Serial Interface Multiplying D/A Converter
• Manufacturer: Analog Devices

Specifications of AD5426

• Resolution (bits): 8bit
• Dac Update Rate: 2.47MSPS
• Dac Settling Time: 50ns
• Max Pos Supply (v): +5.5V
• Single-supply: Yes
• Dac Type: Current Out
• Dac Input Format: Ser,SPI

Figure 25. Reference Multiplying Bandwidth vs. Frequency and Code
–102
–0.2
–0.4
–0.6
–0.8
–12
–18
–24
–30
–36
–42
–48
–54
–60
–66
–72
–78
–84
–90
–96
3.5
3.0
2.5
2.0
1.5
0.5
0.2
–6
Figure 26. Reference Multiplying Bandwidth—All 1s Loaded
1
0
6
0
0
1
1
1
T
V
V
C
AD8038 AMPLIFIER
T
AD5443
LOADING 010101010101
LOADING
ZS TO FS
A
DD
REF
COMP
A
= 25°C
= 25°C
= 5V
10
= ±3.5V
10
10
Figure 24. Supply Current vs. Update Rate
= 1.8pF
100
100
100
ALL ON
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
ALL OFF
1k
1k
1k
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
10k
10k
10k
100k
100k
100k
V
CC
V
AD8038 AMPLIFIER
CC
= 3V
1M
1M
1M
= 5V
C
COMP
V
REF
10M
T
10M
10M
V
A
DD
= ±3.5V
= 1.8pF
= 25°C
= 5V
100M
100M
100M
Rev. C | Page 11 of 28
–0.010
–0.020
0.060
0.050
0.040
0.030
0.020
0.010
–1.70
–1.71
–1.72
–1.73
–1.74
–1.75
–1.76
Figure 27. Reference Multiplying Bandwidth vs. Frequency and
–3
–6
–9
3
0
0
10k
0
0
T
V
AD8038 AMPLIFIER
A
DD
V
= 25°C
REF
= 5V
V
V
V
REF
REF
Figure 29. Midscale Transition V
REF
Figure 28. Midscale Transition V
= ±0.15V, AD8038 C
V
50
50
REF
= ±3.51V, AD8038 C
= ±2V, AD8038 C
= ±2V, AD8038 C
100k
= ±0.15V, AD8038 C
Compensation Capacitor
V
NRG = 1.184nVs
0x7FF TO 0x800
V
NRG = 2.049nVs
0x7FF TO 0x800
DD
V
0x800 TO 0x7FF
DD
100
100
DD
5V, 3.5V REF
5V, 0V REF
V
NRG = 0.119nVs,
0x800 TO 0x7FF
FREQUENCY (Hz)
5V, 3.5V REF, NRG = 0.364nVs,
DD
AD5426/AD5432/AD5443
V
NRG = 1.433nVs
0x7FF TO 0x800
DD
V
NRG = 0.088nVs
0x800 TO 0x7FF
5V, 0V REF
V
NRG = 0.647nVs
0x800 TO 0x7FF
DD
TIME (ns)
TIME (ns)
DD
3V, 3.5V REF
C
C
C
3V, 0V REF
1pF
1.47pF
1.47pF
150
150
C
1M
3V, 3.5V REF
V
NRG = 1.877nVs
0x7FF TO 0x800
1.8pF
DD
C
1pF
3V, 0V REF
200
200
REF
T
V
AD8038 AMPLIFIER
C
AD5443
T
V
AD8038 AMPLIFIER
C
AD5443
REF
A
A
REF
REF
COMP
COMP
10M
= 3.5 V
= 25°C
= 25°C
= 0 V
= 3.5V
= 0V
= 1.8pF
= 1.8pF
250
250
100M
300
300