Datasheet

AD9750
–7–
REV. 0
Typical AC Characterization Curves @ +5 V Supplies
(AVDD = +5 V, DVDD = +5 V, I
OUTFS
= 20 mA, 50 ⍀ Doubly Terminated Load, Differential Output, T
A
= +25ⴗC, SFDR up to Nyquist, unless otherwise noted)
f
OUT
– MHz
SFDR – dBc
90
80
40
1
10
70
60
50
25MSPS
100MSPS
65MSPS
125MSPS
Figure 3. SFDR vs. f
OUT
@ 0 dBFS
f
OUT
– MHz
SFDR – dBc
90
80
40
0
10
20 30 40 50
70
60
50
–12dBF
S
–6dBF
S
0dBF
S
Figure 6. SFDR vs. f
OUT
@ 100 MSPS
A
OUT
– dBF
S
SFDR – dBc
90
80
–25 –20
–15 –10 –5 0
70
60
50
455kHz/5MSPS
5.91/65MSPS
2.27MHz/25MHz
11.37MHz/125MSPS
Figure 9. Single-Tone SFDR vs. A
OUT
@ f
OUT
= f
CLOCK
/11
f
OUT
– MHz
SFDR – dBc
90
80
40
0
21246810
70
60
50
–6dBF
S
–12dBF
S
0dBF
S
Figure 4. SFDR vs. f
OUT
@ 25 MSPS
f
OUT
– MHz
SFDR – dBc
90
80
40
0
10 60
20 30 40 50
70
60
50
–12dBF
S
–6dBF
S
0dBF
S
Figure 7. SFDR vs. f
OUT
@125 MSPS
A
OUT
– dBc
SFDR – dBc
90
80
–25 –20
–15 –10 –5 0
70
60
50
1MHz/5MHz
13MHz/65MHz
25MHz/125MHz
5MHz/25MHz
Figure 10. Single-Tone SFDR vs.
A
OUT
@ f
OUT
= f
CLOCK
/5
f
OUT
– MHz
SFDR – dBc
90
80
40
0
530
10 15 20 25
70
60
50
–12dBF
S
–6dBF
S
0dBF
S
Figure 5. SFDR vs. f
OUT
@ 65 MSPS
f
OUT
– MHz
SFDR – dBc
90
80
40
0
2
46810
70
60
50
20mAF
S
10mAF
S
5mAF
S
12
Figure 8. SFDR vs. f
OUT
and I
OUTFS
@
25 MSPS and 0 dBFS
f
CLOCK
– MSPS
SNR – dB
70
66
50
0
10 60
20 30 40 50
62
58
54
I
OUTFS
= 20mA
I
OUTFS
= 5mA
I
OUTFS
= 10mA
Figure 11. SNR vs. f
CLOCK
and I
OUTFS
@ f
OUT
= 2 MHz and 0 dBFS