AD6644ST/PCB(Rev0) View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
AD6644ST/PCB Datasheet PDF : 19 Pages
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Typical Performance Characteristics–AD6644
0
–10
ENCODE = 65MSPS
AIN = 2.2MHz @ –1dBFS
–20
SNR = 74.5dB
SFDR = 92dBc
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
0
5
10
15
20
25
30
FREQUENCY – MHz
Figure 8. Single Tone at 2.2 MHz
75.0
ENCODE = 65MSPS, AIN = –1dBFS
74.5
TEMP = –25 C, ؉25 C, ؉85 C
T = –25 C
74.0
T = ؉85 C
T = ؉25 C
73.5
73.0
72.5
72.0
0
5
10
15
20
25
30
FREQUENCY – MHz
Figure 11. Noise vs. Analog Frequency (Nyquist)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
0
ENCODE = 65MSPS
AIN = 15.5MHz @ –1dBFS
SNR = 74dB
SFDR = 90dBc
5
10
15
20
25
30
FREQUENCY – MHz
Figure 9. Single Tone at 15.5 MHz
94
ENCODE = 65MSPS, AIN = –1dBFS
92
TEMP = ؊25 C, ؉25 C, ؉85 C
90
T = ؊25 C, ؉85 C
88
T = ؉25 C
86
84
82
80
0
5
10
15
20
25
30
ANALOG INPUT FREQUENCY – MHz
Figure 12. Harmonics vs. Analog Frequency (Nyquist)
0
–10
ENCODE = 65MSPS
AIN = 30MHz @ –1dBFS
–20
SNR = 73.5dB
SFDR = 85dBc
–30
–40
–50
–60
–70
–80
–90
–100
–110
–120
–130
0
5
10
15
20
25
30
FREQUENCY – MHz
Figure 10. Single Tone at 30 MHz
75
LOW NOISE ANALOG SOURCE
74
73
72
71
PHASE NOISE OF ANALOG SOURCE
DEGRADES PERFORMANCE
70
69
AIN = –1dBFS
ENCODE = 65MSPS
68
0 10 20 30 40 50 60 70 80 90 100
ANALOG FREQUENCY – MHz
Figure 13. Noise vs. Analog Frequency (IF)
REV. 0
–9–
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