AD9740_15 Datasheet, PDF (12/32 Pages) Analog Devices – 10-Bit, 210 MSPS TxDAC D/A Converter

AD9740
90
85
80
4MHz
75
70
65
60
49MHz
55
34MHz
19MHz
50
–40
–20
0
20
40
60
80
TEMPERATURE (°C)
Figure 18. SFDR vs. Temperature @ 165 MSPS, 0 dBFS
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
1
f_CLOCK = 78MSPS
f_OUT = 15.0MHz
SFDR = 77dBc
AMPLITUDE = 0dBFS
6
11
16
21
26
31
36
FREQUENCY (MHz)
Figure 19. Single-Tone SFDR
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
1
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
1
f_CLOCK = 78MSPS
f_OUT1 = 15.0MHz
f_OUT2 = 15.4MHz
SFDR = 77dBc
AMPLITUDE = 0dBFS
6
11
16
21
26
31
36
FREQUENCY (MHz)
Figure 20. Dual-Tone SFDR
f_CLOCK = 78MSPS
f_OUT1 = 15.0MHz
f_OUT2 = 15.4MHz
f_OUT3 = 15.8MHz
f_OUT4 = 16.2MHz
SFDR = 72dBc
AMPLITUDE = 0dBFS
6
11
16
21
26
31
36
FREQUENCY (MHz)
Figure 21. Four-Tone SFDR
3.3V
0.1μF
V_REFIO
R_SET
2kΩ
CLOCK
I_REF
3.3V
REFLO
1.2V REF
REFIO
FS ADJ
150pF
AVDD
ACOM
AD9740
PMOS
CURRENT SOURCE
ARRAY
DVDD
DCOM
SEGMENTED SWITCHES
FOR DB9–DB1
LSB
SWITCHES
IOUTA
IOUTB
CLOCK
SLEEP
LATCHES
V_DIFF = V_OUTA – V_OUTB
IOUTA
IOUTB
V_OUTB
MODE
R_LOAD
50Ω
V_OUTA
R_LOAD
50Ω
DIGITAL DATA INPUTS (DB9–DB0)
Figure 22. Simplified Block Diagram (SOIC/TSSOP Packages)
Rev. B | Page 12 of 32