AD9788 Analog Devices, AD9788 Datasheet - Page 15

• Manufacturer Part Number: AD9788
• Description: Dual 16-Bit 800 MSPS DAC with Low Power 32-Bit Complex NCO
• Manufacturer: Analog Devices

Specifications of AD9788

• Resolution (bits): 16bit
• Dac Update Rate: 800MSPS
• Dac Settling Time: n/a
• Max Pos Supply (v): +3.47V
• Single-supply: No
• Dac Type: Current Out
• Dac Input Format: Par

4× Interpolation, f
Figure 18. AD9788 ACLR for Third Adjacent Band WCDMA, 4× Interpolation,
–55
–60
–65
–70
–75
–80
–85
–90
–70
–75
–80
–85
–90
100
Figure 17. AD9788 ACLR for Second Adjacent Band WCDMA,
90
80
70
60
50
f
DATA
0
0
0
= 122.88 MSPS, NCO Translates Baseband Signal to IF
Figure 19. AD9788 IMD vs. f
20
20
–3 dBFS PLL OFF
160MSPS
–3 dBFS PLL OFF
DATA
40
40
20
= 122.88 MSPS, NCO Translates Baseband Signal to IF
60
60
–6 dBFS PLL OFF
80 100 120 140 160 180 200 220 240
80 100 120 140 160 180 200 220 240
40
–6 dBFS PLL OFF
200MSPS
f
f
f
OUT
0 dBFS PLL ON
OUT
OUT
60
(MHz)
(MHz)
(MHz)
0 dBFS PLL ON
OUT
0 dBFS PLL OFF
0 dBFS PLL OFF
, 1× Interpolation
80
250MSPS
100
120
260
260
Rev. A | Page 15 of 64
Figure 22. AD9788 IMD vs. f
100
100
100
90
80
70
60
50
90
80
70
60
50
90
80
70
60
50
0
0
0
Figure 20. AD9788 IMD vs. f
Figure 21. AD9788 IMD vs. f
100MSPS
40
20
200MSPS
80
40
50
120
60
PLL OFF
160MSPS
AD9785/AD9787/AD9788
PLL On/PLL Off
160
OUT
80
100
f
f
f
, 8× Interpolation, f
OUT
OUT
OUT
150MSPS
200
100
PLL ON
(MHz)
(MHz)
(MHz)
OUT
OUT
240
120
, 2× Interpolation
, 4× Interpolation
150
280
250MSPS
140
DATA
320
160
200
200MSPS
= 100 MSPS,
360
180
400
200