AD9861-50EB Analog Devices Inc, AD9861-50EB Datasheet - Page 18

• Manufacturer Part Number: AD9861-50EB
• Description: BOARD EVAL FOR AD9861-50
• Manufacturer: Analog Devices Inc

Specifications of AD9861-50EB

• Rohs Status: RoHS non-compliant
• Module/board Type: Evaluation Board
• For Use With/related Products: AD9861-50

AD9861
Figure 52 to Figure 57 use the same input data to the Tx path, a 64-carrier OFDM signal over a 20 MHz bandwidth, centered at 20 MHz.
The center two carriers are removed from the signal to observe the in-band intermodulation distortion (IMD) from the DAC output.
Figure 52. AD9861 Tx Path FFT, 64-Carrier (Center Two Carriers Removed)
OFDM Signal over 20 MHz Bandwidth, Centered at 20 MHz, with
–100
–120
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Figure 53. AD9861 Tx Path FFT, Lower-Band IMD Products of
Figure 54. AD9861 Tx Path FFT of OFDM Signal in Figure 52,
7.5
7.5
0
20 mA Full-Scale Output into 60 Ω Differential Load
8.0
10
12.5
8.5
20
OFDM Signal in Figure 52
9.0
with 1× Interpolation
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
30
17.5
9.5
10.0
40
22.5
10.5
50
11.0 11.5 12.0
60
27.5
70
32.5
12.5
80
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–90
Figure 56. AD9861 Tx Path FFT, Upper-Band IMD Products of
Figure 57. AD9861 Tx Path FFT of OFDM Signal in Figure 52,
18.75
27.5
Figure 55. AD9861 Tx Path FFT, In-Band IMD Products of
0
28.0
10
19.25
28.5
20
OFDM Signal in Figure 52
OFDM Signal in Figure 52
29.0
with 4× Interpolation
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
30
19.75
29.5
30.0
40
20.25
30.5
50
31.0
60
20.75
31.5
70
32.0
21.25
32.5
80