AD9865CHIPS AD [Analog Devices], AD9865CHIPS Datasheet - Page 16

• Manufacturer Part Number: AD9865CHIPS
• Description: Broadband Modem Mixed-Signal Front End
• Manufacturer: AD [Analog Devices]

AD9865
TxDAC PATH TYPICAL PERFORMANCE CHARACTERISTICS
AVDD = CLKVDD = DVDD = DRVDD = 3.3 V, f
(see Figure 63) into 50 Ω load half- or full-duplex interface, default power bias settings.
Figure 29. 2-Tone Worst Spur Frequency Sweep vs. Peak Power
–10
–20
–30
–40
–50
–60
–70
–80
–65
–70
–75
–80
–85
–90
–65
–70
–75
–80
–85
–90
10
0
Figure 28. 2-Tone IMD Frequency Sweep vs. Peak Power
(f
0
Figure 27. Dual-Tone Spectral Plot of TxDAC's Output
0
0
DATA
= 50 MSPS, 4× Interpolation, 10 dBm Peak Power,
2.5
2.5
with f
with f
5
2-TONE CENTER FREQUENCY (MHz)
2-TONE CENTER FREQUENCY (MHz)
F1 = 17 MHz, F2 = 18 MHz)
DATA
DATA
5.0
5.0
= 50 MSPS, 4× Interpolation
= 50 MSPS, 4× Interpolation
10dBm
FREQUENCY (MHz)
7.5
7.5
10
10.0
10.0
15
7dBm
7dBm
12.5
12.5
4dBm
4dBm
15.0
15.0
20
10dBm
OSCIN
17.5
17.5
= 50 MSPS and 80 MSPS, RSET = 1.96 kΩ, 2:1 transformer coupled output
30
20.0
20.0
Rev. A | Page 16 of 48
Figure 32. 2-Tone Worst Spur Frequency Sweep vs. Peak Power
–10
–20
–30
–40
–50
–60
–70
–80
–65
–70
–75
–80
–85
–90
–65
–70
–75
–80
–85
–90
10
0
Figure 31. 2-Tone IMD Frequency Sweep vs. Peak Power
(f
0
Figure 30. Dual-Tone Spectral Plot of TxDAC's Output
0
0
DATA
= 80 MSPS, 2× Interpolation, 10 dBm Peak Power,
5
with f
with f
5
5
F1 = 27.1 MHz, F2 = 28.7 MHz)
2-TONE CENTER FREQUENCY (MHz)
2-TONE CENTER FREQUENCY (MHz)
10
DATA
DATA
= 80 MSPS, 2× Interpolation
= 80 MSPS, 2× Interpolation
10
10
FREQUENCY (MHz)
15
4dBm
4dBm
20
15
15
10dBm
25
20
20
10dBm
7dBm
7dBm
30
25
25
35
40
30
30