AD9779 Analog Devices, AD9779 Datasheet - Page 40

• Manufacturer Part Number: AD9779
• Description: Dual 16-Bit, 1 GSPS, Digital-to-Analog Converter
• Manufacturer: Analog Devices

Specifications of AD9779

• Resolution (bits): 16bit
• Dac Update Rate: 1GSPS
• Dac Settling Time: n/a
• Max Pos Supply (v): +3.47V
• Single-supply: Yes
• Dac Type: Current Out
• Dac Input Format: Par

AD9776/AD9778/AD9779
Figure 84. Digital 3.3 V Supply, I Data Only, Real Mode, Includes Modulation
Figure 86. Power Dissipation, Digital 1.8 V Supply, I and Q Data, Dual DAC
0.075
0.050
0.025
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
0
0
0
0
0
4× INTERPOLATION,
ZERO STUFFING
Figure 85. Total Power Dissipation, Dual DAC Mode
8× INTERPOLATION, f
8× INTERPOLATION,
ZERO STUFFING
ALL INTERPOLATION MODES
25
25
25
Mode, Does Not Include Zero Stuffing
50
NO MODULATION
50
50
75
Modes and Zero Stuffing
75
75
100 125 150 175 200 225
2× INTERPOLATION,
ZERO STUFFING
f
f
DAC
DAC
DAC
100
100
f
f
f
DATA
DATA
DATA
/8,
/4,
/2,
8× INTERPOLATION, ALL
MODULATION MODES
125
125
(MSPS)
(MSPS)
(MSPS)
1× INTERPOLATION,
ZERO STUFFING
4× INTERPOLATION
150
150
1× INTERPOLATION,
NO MODULATION
2× INTERPOLATION,
ALL MODULATION MODES
2× INTERPOLATION
175
175
4× INTERPOLATION,
ALL MODULATION
MODES
1× INTERPOLATION
200
200
250 275
225
225
300
250
250
Rev. A | Page 40 of 56
Figure 87. Power Dissipation, Clock 1.8 V Supply, I and Q Data, Dual DAC
0.125
0.100
0.075
0.050
0.025
0.075
0.050
0.025
0.16
0.14
0.12
0.10
0.08
0.06
0.04
0.02
Figure 88. Digital 3.3 V Supply, I and Q Data, Dual DAC Mode
0
0
0
0
0
0
8× INTERPOLATION, f
Figure 89. Power Dissipation of Inverse Sinc Filter
ALL INTERPOLATION MODES
25
25
Mode, Does Not Include Zero Stuffing
200
NO MODULATION
50
50
75
75
400
f
f
DAC
DAC
DAC
100
100
f
f
f
DATA
DATA
DAC
/8,
/4,
/2,
600
125
125
(MSPS)
(MSPS)
(MSPS)
4× INTERPOLATION
150
150
1× INTERPOLATION,
800
NO MODULATION
2× INTERPOLATION
175
175
200
200
1000
225
225
1200
250
250