AD5429 Analog Devices, AD5429 Datasheet - Page 11

• Manufacturer Part Number: AD5429
• Description: Dual 8-Bit, High Bandwidth, Multiplying DAC with Serial Interface
• Manufacturer: Analog Devices

Specifications of AD5429

• Resolution (bits): 8bit
• Dac Update Rate: 2.47MSPS
• Dac Settling Time: 30ns
• Max Pos Supply (v): +5.5V
• Single-supply: Yes
• Dac Type: Current Out
• Dac Input Format: Ser,SPI

Figure 20. Reference Multiplying Bandwidth vs. Frequency and Code
–0.2
–0.4
–0.6
–0.8
–102
0.2
14
12
10
–12
–18
–24
–30
–36
–42
–48
–54
–60
–66
–72
–78
–84
–90
–96
8
6
4
2
0
0
–6
Figure 21. Reference Multiplying Bandwidth—All 1s Loaded
1
6
0
1
1
T
V
V
C
AMP = AD8038
T
LOADING ZS TO FS
A
A
T
LOADING
ZS TO FS
DD
REF
COMP
A
= 25°C
= 25°C
= 25°C
= 5V
10
10
= ± 3.5V
10
Figure 19. 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)
1k
FREQUENCY (Hz)
1k
FREQUENCY (Hz)
10k
10k
10k
100k
100k
100k
V
V
V
DD
DD
DD
1M
= 5V
= 3V
= 2.5V
1M
1M
AMP = AD8038
C
COMP
V
10M
REF
10M
T
10M
V
A
DD
= ±3.5V
= 1.8pF
= 25°C
= 5V
100M
100M
100M
Rev. D | Page 11 of 28
–0.005
–0.010
0.045
0.040
0.035
0.030
0.025
0.020
0.015
0.010
0.005
–3
–6
–9
–1.68
–1.69
–1.70
–1.71
–1.72
–1.73
–1.74
–1.75
–1.76
–1.77
3
0
10k
0
Figure 22. Reference Multiplying Bandwidth vs. Frequency
T
V
0
0
A
DD
0x7FF TO 0x800
0x7FF TO 0x800
= 25°C
V
V
V
V
V
0x800 TO 0x7FF
= 5V
REF
REF
REF
REF
REF
20
20
Figure 24. Midscale Transition, V
= ±2V, AD8038 C
= ±2V, AD8038 C
= ±0.15V, AD8038 C
= ±0.15V, AD8038 C
= ±3.51V, AD8038 C
Figure 23. Midscale Transition, V
100k
40
40
and Compensation Capacitor
V
DD
V
DD
60
60
= 5V
AD5429/AD5439/AD5449
= 5V
FREQUENCY (Hz)
V
DD
V
V
DD
80
C
C
DD
80
= 3V
1.47pF
1pF
TIME (ns)
= 3V
C
C
C
= 5V
TIME (ns)
1M
V
1pF
1.47pF
1.8pF
100
DD
100
= 5V
0x800 TO 0x7FF
V
120
V
120
DD
DD
= 3V
= 3V
140
140
REF
10M
REF
= 3.5 V
= 0 V
T
V
AMP = AD8038
C
T
V
AMP = AD8038
C
A
A
160
REF
COMP
REF
COMP
160
= 25°C
= 25°C
= 3.5V
= 0V
= 1.8pF
= 1.8pF
180
180
100M
200
200