AD9789 Analog Devices, AD9789 Datasheet - Page 21

• Manufacturer Part Number: AD9789
• Description: 14-Bit, 2400 MSPS RF DAC with 4-Channel Signal Processing
• Manufacturer: Analog Devices

Specifications of AD9789

• Resolution (bits): 14bit
• Dac Update Rate: 2.4GSPS
• Dac Settling Time: 13ns
• Max Pos Supply (v): +3.47V
• Single-supply: No
• Dac Type: Current Out
• Dac Input Format: LVDS,Par

Figure 57. Power Dissipation by Supply vs. f
Full-Scale Current = 25 mA (Datapath Configuration: QAM Encoder On,
Figure 58. Power Dissipation by Supply vs. f
One Channel Enabled, f
1100
1000
900
800
700
600
500
400
300
200
100
700
600
500
400
300
200
100
200
180
160
140
120
100
80
60
40
20
Figure 59. AVDD33 Power Dissipation vs. Full-Scale Current
0
0
0
1.0
1.0
8
SRRC Filter On, Four 2× Interpolation Filters On)
10
AVDD33
DVDD33 (LVDS)
DVDD33 (CMOS)
DVDD18
DVDD15
CVDD18
AVDD33
DVDD33 (LVDS)
DVDD33 (CMOS)
DVDD18
DVDD15
CVDD18
1.2
1.2
12
14
1.4
1.4
FULL-SCALE CURRENT (mA)
16
OUT
AVDD33
= 70 MHz, Full-Scale Current = 20 mA
18
1.6
1.6
f
f
DAC
DAC
20
(GHz)
(GHz)
DAC
1.8
1.8
, 4-Channel DOCSIS, f
22
24
DAC
2.0
2.0
, 16× Interpolation,
26
28
2.2
2.2
30
OUT
= 915 MHz,
2.4
2.4
32
Rev. A | Page 21 of 76
Figure 60. Total Power Dissipation vs. f
Full-Scale Current = 25 mA (Datapath Configuration: QAM Encoder On,
One Channel Enabled, f
2000
1800
1600
1400
1200
1000
1400
1200
1000
800
600
400
200
800
600
400
200
Figure 61. Total Power Dissipation vs. f
0
0
1.0
1.0
SRRC Filter On, Four 2× Interpolation Filters On)
TOTAL (CMOS)
TOTAL (LVDS)
TOTAL (CMOS)
TOTAL (LVDS)
1.2
1.2
1.4
1.4
OUT
= 70 MHz, Full-Scale Current = 20 mA
1.6
1.6
f
f
DAC
DAC
DAC
(GHz)
(GHz)
, 4-Channel DOCSIS, f
1.8
1.8
DAC
, 16× Interpolation,
2.0
2.0
2.2
2.2
OUT
AD9789
= 915 MHz,
2.4
2.4