AD6640AST 데이터 시트보기 (PDF) - Analog Devices
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AD6640AST Datasheet PDF : 24 Pages
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0
ENCODE = 65MSPS
AIN = 15.0MHz, 16.0MHz
20
NO DITHER
40
60
80
100
120
dc
6.5
13.0
19.5
26.0
32.5
FREQUENCY – MHz
TPC 7. Two Tones at 15.0 MHz and 16.0 MHz
100
90
dBFS
80
70
60
ENCODE = 65MSPS
AIN = 31.0MHz
50
40
dBc
30
SFDR = 80dB
REFERENCE LINE
20
10
0
–80 –70 –60 –50 –40 –30 –20 –10 0
ANALOG INPUT POWER LEVEL – dBFS
TPC 8. Single Tone SFDR
100
90
dBFS
80
70
60
ENCODE = 65MSPS
F1 = 15.0MHz
50 F2 = 16.0MHz
40
30
dBc
SFDR = 80dB
REFERENCE LINE
20
10
0
–80 –70 –60 –50 –40 –30 –20 –10
0
INPUT POWER LEVEL (F1 = F2) – dBFS
TPC 9. Two Tone SFDR
AD6640
85
AIN = 19.5MHz
WORST SPUR
80
75
70
SNR
65
60
dc 8
16 24 32 40 48 56 64 72 80
SAMPLE RATE – MSPS
TPC 10. SNR, Worst Spurious vs. ENCODE
90
85
ENCODE = 65MSPS
AIN = 2.2MHz
80
WORST SPUR
75
70
SNR
65
60
55
50
45
40
35
30
25 30 35 40 45 50 55 60 65 70 75
ENCODE DUTY CYCLE – %
TPC 11. SNR, Worst Spurious vs. Duty Cycle
90
85
2.2MHz
80
75
WORST SPUR
ENCODE = 65MSPS
69MHz
70
65
2.2MHz
60
69MHz
55
SNR
50
45
40
35
30
–15 –12 –9
–6 –3 0 3 6
ENCODE POWER – dBm
9 12 15
TPC 12. SNR, Worst Spurious vs. ENCODE Power
REV. A
–9–
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