AD5425 Analog Devices, AD5425 Datasheet - Page 10

• Manufacturer Part Number: AD5425
• Description: High Bandwidth, CMOS 8-Bit Serial Interface Multiplying D/A Converter
• Manufacturer: Analog Devices

Specifications of AD5425

• Resolution (bits): 8bit
• Dac Update Rate: 2.47MSPS
• Dac Settling Time: 100ns
• Max Pos Supply (v): +5.5V
• Single-supply: Yes
• Dac Type: Current Out
• Dac Input Format: Ser,SPI

AD5425
–0.2
–0.4
–0.6
–0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.2
Figure 18. Reference Multiplying Bandwidth—All 1s Loaded
0
0
0
2.5
0
1
T
T
T
V
V
C
AD8083 AMPLIFIER
A
A
A
DD
REF
COMP
= 25°C
= 25°C
Figure 17. Threshold Voltages vs. Supply Voltage
= 25°C
= 5V
= ±3.5V
10
Figure 16. Supply Current vs. Input Voltage
= 1.8pF
3.0
1
100
3.5
INPUT VOLTAGE (V)
V
1k
FREQUENCY (Hz)
DD
V
2
VOLTAGE (V)
DD
V
= 2.5V
V
IH
DD
= 5V
10k
4.0
= 3V
V
IL
100k
3
4.5
1M
4
5.0
10M
100M
5.5
5
Rev. A | Page 10 of 28
–0.010
–0.020
Figure 20. Reference Multiplying Bandwidth vs. Frequency and Code
0.060
0.050
0.040
0.030
0.020
0.010
–102
–12
–18
–24
–30
–36
–42
–48
–54
–60
–66
–72
–78
–84
–90
–96
Figure 21. Reference Multiplying Bandwidth vs. Frequency and
–6
–3
–6
–9
0
6
0
3
0
10k
0
1
T
V
AD8038 AMPLIFIER
T
LOADING
ZS TO FS
A
DD
A
V
= 25°C
= 25°C
REF
= 5V
V
V
V
10
REF
Figure 19. Midscale Transition, V
REF
REF
= ±0.15V, AD8038 C
V
50
REF
= ±3.51V, AD8038 C
= ±2V, AD8038 C
= ±2V, AD8038 C
100k
100
= ±0.15V, AD8038 C
Compensation Capacitor
ALL ON
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
ALL OFF
V
NRG = 2.049nVs
07xFF TO 0x800
DD
100
5V, 0V REF
V
NRG = 0.119nVs,
0x800 TO 0x7FF
1k
FREQUENCY (Hz)
FREQUENCY (Hz)
DD
V
NRG = 0.088nVs
0x800 TO 0x7FF
DD
5V, 0V REF
TIME (ns)
C
C
C
3V, 0V REF
150
10k
1pF
1.47pF
1.47pF
C
1M
V
NRG = 1.877nVs
0x7FF TO 0x800
1.8pF
DD
C
3V, 0V REF
1pF
100k
200
T
V
AD8038 AMPLIFIER
C
REF
AD8083 AMPLIFIER
A
REF
COMP
10M
= 25°C
= 3.5 V
1M
C
= 0V
COMP
V
= 1.8pF
250
REF
T
10M
V
A
DD
= ±3.5V
= 1.8pF
= 25°C
INPUT
= 5V
100M
100M
300