AD9865
–20
–30
–40
–50
–60
–70
–80
–90
–100
–20
–30
–40
–50
–60
–70
–80
–90
–100
PAR = 11.4
RMS = –1.4dBm
PAR = 11.4
RMS = –1.4dBm
0
5
10
15
20
25
0
5
10
15
20
25
30
35
40
FREQUENCY (MHz)
FREQUENCY (MHz)
Figure 33. Spectral Plot of 84-Carrier OFDM Test Vector
(fDATA = 50 MSPS, 4× Interpolation)
Figure 36. Spectral Plot of 111-Carrier OFDM Test Vector
(fDATA = 80 MSPS, 2× Interpolation)
–20
–30
–40
–50
–60
–70
–80
–90
–100
–20
PAR = 11.4
PAR = 11.4
RMS = –1.4dBm
RMS = –1.4dBm
–30
–40
–50
–60
–70
–80
–90
–100
0
25
50
75
100
125
150
175
200
0
20
40
60
80
100
120
140
160
FREQUENCY (MHz)
FREQUENCY (MHz)
Figure 34. Wideband Spectral Plot of 88-Subcarrier OFDM Test Vector
(fDATA = 50 MSPS, 4× Interpolation)
Figure 37. Wideband Spectral Plot of 111-Carrier OFDM Test Vector
(fDATA = 80 MSPS, 2× Interpolation)
100
95
2-TONE IMD
95
90
85
80
75
70
2-TONE IMD
90
85
80
75
70
SNR
SNR
65
65
60
60
55
55
–24
–21
–18
–15
–12
–9
–6
–3
0
–24
–21
–18
–15
–12
–9
–6
–3
0
AOUT (dBFS)
AOUT (dBFS)
Figure 35. SNR and SFDR vs. POUT
(fOUT = 12.55 MHz, fDATA = 50 MSPS, 4× Interpolation)
Figure 38. SNR and SFDR vs. POUT
(fOUT = 20 MHz, fDATA = 80 MSPS, 2× Interpolation)
Rev. A | Page 17 of 48
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