AD9742 데이터 시트보기 (PDF) - Analog Devices
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AD9742 Datasheet PDF : 32 Pages
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AD9742
90
85
4MHz
80
75
19MHz
70
65
49MHz
60
55
34MHz
50
–40
–20
0
20
40
60
80
TEMPERATURE (°C)
Figure 17. SFDR vs. Temperature @ 165 MSPS, 0 dBFS
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
1
fCLOCK = 78MSPS
fOUT = 15.0MHz
SFDR = 79dBc
AMPLITUDE = 0dBFS
6
11
16
21
26
31
36
FREQUENCY (MHz)
Figure 18. Single-Tone SFDR
Data Sheet
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
1
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
1
fCLOCK = 78MSPS
fOUT1 = 15.0MHz
fOUT2 = 15.4MHz
SFDR = 77dBc
AMPLITUDE = 0dBFS
6
11
16
21
26
31
36
FREQUENCY (MHz)
Figure 19. Dual-Tone SFDR
fCLOCK = 78MSPS
fOUT1 = 15.0MHz
fOUT2 = 15.4MHz
fOUT3 = 15.8MHz
fOUT4 = 16.2MHz
SFDR = 75dBc
AMPLITUDE = 0dBFS
6
11
16
21
26
31
36
FREQUENCY (MHz)
Figure 20. Four-Tone SFDR
3.3V
0.1µF
VREFIO
RSET
2kΩ
CLOCK
IREF
3.3V
REFLO
1.2V REF
REFIO
FS ADJ
150pF
AVDD
ACOM
AD9742
PMOS
CURRENT SOURCE
ARRAY
DVDD
DCOM
SEGMENTED SWITCHES
FOR DB11–DB3
LSB
SWITCHES
IOUTA
IOUTB
CLOCK
SLEEP
LATCHES
VDIFF = VOUTA – VOUTB
IOUTA
IOUTB
VOUTB
MODE
RLOAD
50Ω
VOUTA
RLOAD
50Ω
DIGITAL DATA INPUTS (DB11–DB0)
Figure 21. Simplified Block Diagram (SOIC/TSSOP Packages)
Rev. C | Page 10 of 32
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