AD9789 Analog Devices, AD9789 Datasheet - Page 19

• 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

25°C, Sum Scale = 20, Full-Scale Current = 25 mA, Span = 18 MHz, Channel 1
(Equalization Filter from Demodulation Toolbox on Spectrum Analyzer Used)
Figure 46. Zoomed 4-Channel QAM ACLR, f
Figure 48. Modulation Error Ratio, Unequalized, 1-Channel 256-QAM,
RMS RESULTS
CARRIER POWER
–23.62dBm/
6.00000MHz
Figure 47. Modulation Error Ratio, Equalized, 1-Channel 256-QAM,
f
f
DAC
DAC
CENTER 834.00MHz
RES BW 30kHz
REF –35.96dBm
50
48
46
44
42
40
38
36
34
32
30
50
48
46
44
42
40
38
36
34
32
30
50
50
= 2.29376 GHz, Full-Scale Current = 20 mA, Sum Scale = 48
= 2.29376 GHz, Full-Scale Current = 20 mA, Sum Scale = 48
150
150
3.375MHz 750.0kHz
6.375MHz 5.250MHz –69.38 –92.99
250
250
OFFSET
FREQ.
ATTEN 2dB
350
350
VBW 300kHz
REF BW
450
450
f
f
OUT
OUT
550
(MHz)
550
(MHz)
–72.95 –96.56
SWEEP 58.4ms (601 PTS)
dBc
OUT
650
650
LOWER
= 840 MHz, Temperature =
dBm
750
750
SPAN 18MHz
–10.86 –34.48
–0.51
850
850
dBc
+25°C
+85°C
–40°C
+25°C
+85°C
–40°C
UPPER
950
950
–24.13
dBm
Rev. A | Page 19 of 76
25°C, Sum Scale = 20, Full-Scale Current = 25 mA, Span = 18 MHz, Channel 4
(Equalization Filter from Demodulation Toolbox on Spectrum Analyzer Used)
Figure 49. Zoomed 4-Channel QAM ACLR, f
Figure 51. Modulation Error Ratio, Unequalized, 4-Channel 256-QAM,
RMS RESULTS
CARRIER POWER
–23.20dBm/
6.00000MHz
Figure 50. Modulation Error Ratio, Equalized, 4-Channel 256-QAM,
f
f
DAC
DAC
CENTER 852.00MHz
RES BW 30kHz
REF –35.96dBm
50
48
46
44
42
40
38
36
34
32
30
50
48
46
44
42
40
38
36
34
32
30
50
50
= 2.29376 GHz, Full-Scale Current = 25 mA, Sum Scale = 20
= 2.29376 GHz, Full-Scale Current = 25 mA, Sum Scale = 20
150
150
3.375MHz 750.0kHz
6.375MHz 5.250MHz –0.77
OFFSET
250
250
FREQ.
ATTEN 2dB
350
350
VBW 300kHz
REF BW
450
450
f
f
OUT
OUT
550
(MHz)
550
(MHz)
–11.20 –34.40
SWEEP 58.4ms (601 PTS)
dBc
OUT
650
650
LOWER
= 840 MHz, Temperature =
–23.96
dBm
750
750
SPAN 18MHz
–74.44 –97.64
–69.07 –92.26
850
850
dBc
+25°C
+85°C
–40°C
+25°C
+85°C
–40°C
AD9789
UPPER
950
950
dBm