AD9789 Analog Devices, AD9789 Datasheet - Page 14

• 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

AD9789
Figure 22. Noise Floor vs. f
1-Channel QAM, f
1-Channel QAM, f
Figure 21. Second-Order Harmonic Performance vs. f
f
DAC
= 2.3 GHz, Full-Scale Current = 20 mA, f
Figure 20. ACLR Performance over Temperature, 1-Channel QAM,
–55
–60
–65
–70
–75
–80
–85
–55
–60
–65
–70
–75
–80
–85
–15
–25
–35
–45
–55
–65
–75
–85
–5
(DOCSIS SPEC Is −73 dBc; Harmonic Exception Is −63 dBc)
(DOCSIS SPEC Is −73 dBc; Harmonic Exception Is −63 dBc)
0
0
50
100
100
DAC
DAC
200
200
= 2.3 GHz, Full-Scale Current = 20 mA, Sum Scale = 48
= 2.3 GHz, Full-Scale Current = 20 mA, Sum Scale = 48
250
OUT
(DOCSIS SPEC Is −73 dBc)
300
300
over Temperature (ACLR Measured Beyond 30 MHz),
FREQUENCY (MHz)
400
400
450
f
f
OUT
OUT
500
500
(MHz)
(MHz)
600
600
OUT
650
= 200 MHz, Sum Scale = 48
700
700
OUT
DOCSIS3
–40°C
0°C
+25°C
+85°C
800
800
DOCSIS3
25°C
65°C
85°C
over Temperature,
DOCSIS3
25°C
65°C
85°C
850
900 1000
900 1000
Rev. A | Page 14 of 76
1-Channel QAM, f
f
DAC
Figure 24. Third-Order Harmonic Performance vs. f
Figure 25. ACLR Performance over f
Figure 23. ACLR Performance over Temperature, 1-Channel QAM,
= 2.3 GHz, Full-Scale Current = 20 mA, f
Full-Scale Current = 20 mA, Temperature = 25°C, Sum Scale = 48
–55
–60
–65
–70
–75
–80
–85
–15
–25
–35
–45
–55
–65
–75
–85
–15
–25
–35
–45
–55
–65
–75
–85
–5
–5
(DOCSIS SPEC Is −73 dBc; Harmonic Exception Is −63 dBc)
0
50
50
100
150
DOCSIS3
2.3GHz
2.2GHz
2.4GHz
DAC
250
200
= 2.3 GHz, Full-Scale Current = 20 mA, Sum Scale = 48
250
DOCSIS3
–40°C
0°C
+25°C
+85°C
(DOCSIS SPEC Is −73 dBc)
(DOCSIS SPEC Is −73 dBc)
300
350
450
FREQUENCY (MHz)
FREQUENCY (MHz)
400
450
f
OUT
DAC
500
(MHz)
550
, 1-Channel QAM, f
650
600
OUT
650
= 800 MHz, Sum Scale = 48
700
850
750
OUT
800
over Temperature,
DOCSIS3
25°C
65°C
85°C
850
OUT
900 1000
1050
= 850 MHz,
950