AD5424 Analog Devices, AD5424 Datasheet - Page 13

• Manufacturer Part Number: AD5424
• Description: High Bandwidth CMOS 8-Bit Parallel Interface Multiplying D/A Converter
• Manufacturer: Analog Devices

Specifications of AD5424

• Resolution (bits): 8bit
• Dac Update Rate: 20.4MSPS
• Dac Settling Time: 30ns
• Max Pos Supply (v): +5.5V
• Single-supply: Yes
• Dac Type: Current Out
• Dac Input Format: Par

Data Sheet
–102
Figure 28. Reference Multiplying Bandwidth vs. Frequency and Code
–0.2
–0.4
–0.6
–0.8
–12
–18
–24
–30
–36
–42
–48
–54
–60
–66
–72
–78
–84
–90
–96
0.2
–6
14
12
10
6
0
0
8
6
4
2
0
Figure 29. Reference Multiplying Bandwidth—All 1s Loaded
1
1
1
T
V
V
C
AD8038 AMPLIFIER
AD5445 DAC
T
LOADING
ZS TO FS
T
LOADING ZS TO FS
A
DD
REF
A
COMP
A
= 25°C
= 25°C
= 25°C
= 5V
10
10
10
= ±3.5V
Figure 27. 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
FREQUENCY (Hz)
FREQUENCY (Hz)
1k
FREQUENCY (Hz)
1k
10k
10k
10k
100k
100k
100k
V
DD
V
AD8038 AMPLIFIER
DD
= 2.5V
V
= 3V
DD
1M
1M
1M
C
COMP
= 5V
V
AD5445 DAC
REF
T
V
10M
10M
A
10M
DD
= ±3.5V
= 1.8pF
= 25°C
INPUT
= 5V
100M
100M
100M
Rev. C | Page 13 of 28
–0.005
–0.010
0.045
0.040
0.035
0.030
0.025
0.020
0.015
0.010
0.005
–1.68
–1.69
–1.70
–1.71
–1.72
–1.73
–1.74
–1.75
–1.76
–1.77
–3
–6
–9
3
0
Figure 30. Reference Multiplying Bandwidth vs. Frequency and
0
10k
0
0
T
V
AD5445
0x7FF TO 0x800
A
0x800 TO 0x7FF
DD
V
V
V
V
V
= 25°C
20
20
REF
REF
REF
REF
REF
= 5V
0x7FF TO 0x800
Figure 32. Midscale Transition, V
Figure 31. Midscale Transition, V
= ±2V, AD8038 C
= ±2V, AD8038 C
= ±0.15V, AD8038 C
= ±0.15V, AD8038 C
= ±3.51V, AD8038 C
40
40
100k
V
V
DD
DD
Compensation Capacitor
60
60
= 5V
= 5V
V
AD5424/AD5433/AD5445
DD
V
FREQUENCY (Hz)
V
DD
80
DD
80
= 3V
C
C
TIME (ns)
= 3V
TIME (ns)
= 5V
1.47pF
1pF
V
C
C
C
1M
DD
100
100
1pF
1.47pF
1.8pF
= 5V
0x800 TO 0x7FF
V
V
120
120
DD
DD
= 3V
= 3V
T
V
AD8038 AMPLIFIER
C
140
T
V
AD8038 AMPLIFIER
C
140
A
REF
COMP
A
REF
COMP
REF
10M
= 25°C
REF
= 25°C
= 3.5 V
= 0V
= 3.5V
= 0 V
160
160
= 1.8pF
= 1.8pF
180
180
100M
200
200