AD6640PCB AD [Analog Devices], AD6640PCB Datasheet - Page 9

• Manufacturer Part Number: AD6640PCB
• Description: 12-Bit, 65 MSPS IF Sampling A/D Converter
• Manufacturer: AD [Analog Devices]

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Figure 13. Two Tones at 15.0 MHz & 16.0 MHz
100
100
100
120
90
80
70
60
50
40
30
20
10
90
80
70
60
50
40
30
20
10
20
40
60
80
0
0
–80
–80
0
dc
ENCODE = 65MSPS
AIN = 31.0MHz
ENCODE = 65MSPS
F1 = 15.0MHz
F2 = 16.0MHz
–70
–70
Figure 14. Single Tone SFDR
Figure 15. Two Tone SFDR
6.5
ANALOG INPUT POWER LEVEL – dBFS
INPUT POWER LEVEL (F1 = F2) – dBFS
–60
–60
dBFS
dBc
FREQUENCY – MHz
–50
–50
13.0
–40
–40
dBFS
ENCODE = 65MSPS
AIN = 15.0, 16.0MHz
NO DITHER
19.5
dBc
SFDR = 80dB
REFERENCE LINE
SFDR = 80dB
REFERENCE LINE
–30
–30
–20
–20
26.0
–10
–10
32.5
0
0
–9–
Figure 18. SNR, Worst Spurious vs. Encode Power
Figure 17. SNR, Worst Spurious vs. Duty Cycle
Figure 16. SNR, Worst Spurious vs. Encode
85
85
70
60
50
40
35
30
80
75
70
65
60
90
80
75
65
55
45
90
85
80
75
70
65
60
55
50
45
40
35
30
dc
25
–15
2.2MHz
30
8
–12
2.2MHz
16
35
–9
69MHz
WORST SPUR
24
40
WORST SPUR
–6
ENCODE DUTY CYCLE – %
WORST SPUR
ENCODE POWER – dBm
SAMPLE RATE – MSPS
32
45
–3
SNR
40
50
0
48
55
SNR
3
AIN = 19.5MHz
ENCODE = 65MSPS
AIN = 2.2MHz
ENCODE = 65MSPS
69MHz
56
60
6
SNR
64
65
9
AD6640
72
70
12
75
80
15