ADS6444IRGCT 查看數據表（PDF） - STMicroelectronics
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ADS6444IRGCT Datasheet PDF : 75 Pages
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ADS6445, ADS6444
ADS6443, ADS6442
SLAS531 – MAY 2007
ADS6442 (Fsrated = 65 MSPS) (continued)
www.ti.com
SFDR vs INPUT FREQUENCY ACROSS GAINS
96
94
Input adjusted to get −1dBFS input
92
5 dB
90
3 dB
4 dB
88
86
84
6 dB
82
1 dB
80
78
76
10 30 50 70
2 dB
0 dB
90 110 130 150 170 190 210 230
Fin − Input Frequency − MHz
G061
Figure 66.
SINAD vs INPUT FREQUENCY ACROSS GAINS
75
74
3.5 dB
73
1 dB
2 dB
72
3 dB 0 dB
71
70
69
68
67
66
65
20
4 dB
5 dB
6 dB
40 60 80 100 120 140 160 180 200 220
Fin − Input Frequency − MHz
G062
Figure 67.
PERFORMANCE vs AVDD
94
78
fIN = 50.1 MHz
92 LVDD = 3.3 V
77
90
SFDR
76
88
75
PERFORMANCE vs LVDD
92
76
fIN = 50.1 MHz
91 AVDD = 3.3 V
75
SNR
90
74
89
73
86
74
88
SFDR
72
SNR
84
73
87
71
82
3.0
3.1
3.2
3.3
3.4
3.5
AVDD − Supply Voltage − V
Figure 68.
72
3.6
G063
86
3.0
3.1
3.2
3.3
3.4
3.5
LVDD − Supply Voltage − V
Figure 69.
70
3.6
G064
PERFORMANCE vs TEMPERATURE
96
79
94
78
SFDR
92
77
90
76
88
SNR
86
fIN = 50.1 MHz
84
−40 −20
0
20
40
60
T − Temperature − °C
Figure 70.
75
74
73
80
G065
PERFORMANCE vs INPUT AMPLITUDE
110
90
100
85
90 SFDR (dBFS)
80
80
75
SNR (dBFS)
70
70
60
65
50
40
30
−60
SFDR (dBc)
−50
−40
−30
60
55
fIN = 20 MHz
50
−20
−10
0
Input Amplitude − dBFS
G066
Figure 71.
42
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