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ADS6442 (Fsrated = 65 MSPS)
ADS6445, ADS6444
ADS6443, ADS6442
SLAS531 – MAY 2007
0
−20
−40
−60
−80
−100
−120
−140
−160
0
FFT for 10 MHz INPUT SIGNAL
SFDR = 92.4 dBc
SINAD = 74.3 dBFS
SNR = 74.5 dBFS
THD = 90 dBc
10
20
f − Frequency − MHz
Figure 60.
30
G055
0
−20
−40
−60
−80
−100
−120
−140
−160
0
FFT for 50 MHz INPUT SIGNAL
SFDR = 88.8 dBc
SINAD = 73.6 dBFS
SNR = 73.9 dBFS
THD = 86.6 dBc
10
20
f − Frequency − MHz
Figure 61.
30
G056
FFT for 230 MHz INPUT SIGNAL
0
SFDR = 82.1 dBc
−20 SINAD = 69.3 dBFS
SNR = 69.7 dBFS
−40 THD = 81.2 dBc
−60
−80
−100
−120
−140
−160
0
10
20
f − Frequency − MHz
Figure 62.
30
G057
INTERMODULATION DISTORTION (IMD) vs FREQUENCY
0
fIN1 = 185.1 MHz, –7 dBFS
−20
fIN2 = 190.1 MHz, –7 dBFS
2-Tone IMD = –96 dBFS
−40
SFDR = –86 dBFS
−60
−80
−100
−120
−140
−160
0
10
20
f − Frequency − MHz
Figure 63.
30
G058
96
94
92
90
88
86
84
82
80
78
76
0
SFDR vs INPUT FREQUENCY
Gain = 3.5 dB
Gain = 0 dB
50
100
150
200
fIN − Input Frequency − MHz
Figure 64.
250
G059
76
75
74
73
72
71
70
69
68
67
0
SNR vs INPUT FREQUENCY
Gain = 0 dB
Gain = 3.5 dB
50
100
150
200
fIN − Input Frequency − MHz
Figure 65.
250
G060
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