REV. B
AD9764
–7–
Typical AC Characterization Curves
(AVDD = +5 V, DVDD = +3 V, IOUTFS = 20 mA, 50
Doubly Terminated Load, Differential Output, TA = +25 C, SFDR up to Nyquist, unless otherwise noted)
FREQUENCY – MHz
SFDR
–
dBc
90
85
40
0.1
1
100
10
55
45
50
65
60
80
70
75
5 MSPS
25 MSPS
50 MSPS
100 MSPS
Figure 3. SFDR vs. fOUT @ 0 dBFS
FREQUENCY – MHz
SFDR
–
dBc
90
85
40
05
25
10
15
20
60
55
50
45
80
70
75
65
0dBFS
–6dBFS
–12dBFS
Figure 6. SFDR vs. fOUT @ 50 MSPS
AOUT – dBFS
SFDR
–
dBc
90
80
50
–30
–25
0
–20
–15
–10
–5
70
60
455kHz @ 5 MSPS
2.27MHz @ 25 MSPS
4.55MHz @ 50 MSPS
9.09MHz @ 100 MSPS
Figure 9. Single-Tone SFDR vs. AOUT
@ fOUT = fCLOCK/11
FREQUENCY – MHz
SFDR
–
dBc
90
85
40
0
0.5
2.5
1.0
1.5
2.0
60
55
50
45
80
70
75
65
0dBFS
–6dBFS
–12dBFS
Figure 4. SFDR vs. fOUT @ 5 MSPS
FREQUENCY – MHz
SFDR
–
dBc
90
85
40
010
50
20
30
40
60
55
50
45
80
70
75
65
0dBFS
–6dBFS
–12dBFS
Figure 7. SFDR vs. fOUT @100 MSPS
AOUT – dBFS
SFDR
–
dBc
90
80
50
–30
–25
0
–20
–15
–10
–5
70
60
1MHz @ 5 MSPS
5MHz @ 25 MSPS
10MHz @ 50 MSPS
20MHz @ 100 MSPS
Figure 10. Single-Tone SFDR vs.
AOUT @ fOUT = fCLOCK/5
FREQUENCY – MHz
SFDR
–
dBc
90
40
02
12
46
810
85
60
55
50
45
80
75
65
70
0dBFS
–6dBFS
–12dBFS
Figure 5. SFDR vs. fOUT @ 25 MSPS
FREQUENCY – MHz
90
85
50
0.0
2.0
10.0
4.0
6.0
8.0
70
65
60
55
80
75
5mA @ 3V
5mA @ 5V
10mA @ 3V
10mA @ 5V
20mA @ 3V
20mA @ 5V
SFDR
–
dBc
Figure 8. SFDR vs. fOUT and
IOUTFS @ 25 MSPS and 0 dBFS
AOUT – dBFS
SFDR
–
dBc
90
80
50
–30
–25
0
–20
–15
–10
–5
70
60
0.675/0.725MHz @ 5 MSPS
3.38/3.63MHz @ 25 MSPS
13.5/14.5MHz @ 100 MSPS
6.75/7.25 @ 50 MSPS
Figure 11. Dual-Tone SFDR vs. AOUT
@ fOUT = fCLOCK/7