Datasheet

–8–
AD9761—Typical Performance Characteristics
AD9761
–9–
Typical AC Characterization Curves @ 3 V Supplies
(AVDD = 3 V, DVDD = 3 V, 50  Doubly Terminated Load, T
A
= 25C, f
CLOCK
= 10 MSPS, unless otherwise noted, worst of I or Q output
performance shown.)
0
–10
–20
–30
–40
–50
–70
–60
–80
–90
START: 0Hz
STOP: 10MHz
10dB (Div)
TPC 10. Single-Tone SFDR (DC to
2 f
DATA
, f
CLOCK
= 2 f
DATA
)
f
OUT
(MHz)
dB
75
70
60
65
0 0.5 2.51.0 1.5 2.0
S/E 0dBFS
DIFF 0dBFS
S/E –6dBFS
DIFF –6dBFS
80
TPC 13. Out-of-Band SFDR vs.
f
OUT
(f
DATA
/2 to 3/2f
DATA
)
f
OUT
(MHz)
dB
80
70
SFDR @ 10mA
65
2
75
60
55
0
SINAD @ 10mA
SFDR @ 5mA
SINAD @ 5mA
SFDR @ 2.5mA
SINAD @ 2.5mA
4 6 8 10
TPC 16. SINAD/SFDR vs. I
OUTFS
(DC to f
DATA
/2, Differential Output)
f
OUT
(MHz)
dB
65
60
50
55
0 0.5 2.51.0 1.5 2.0
10.50
9.67
8.01
8.84
ENOB
S/E 0dBFS
DIFF
0dBFS
S/E –6dBFS
DIFF –6dBFS
TPC 11. SINAD (ENOBs) vs. f
OUT
(DC to f
DATA
/2)
A
OUT
(dBFS)
dB
75
70
60
65
–30 –25 –5–20 –15 –10
SFDR @ 40MSPS
80
SFDR @ 20MSPS
SFDR @ 10MSPS
SINAD @ 40MSPS
SINAD @ 20MSPS
SINAD @ 10MSPS
55
50
45
40
35
0
TPC 14. SINAD vs. A
OUT
(DC to
f
DATA
/2, Differential Output)
SFDR @ 10mA
f
OUT
(MHz)
dB
80
70
65
2
75
60
55
0
SINAD @ 10mA
SFDR @ 5mA
SINAD @ 5mA
SFDR @ 2.5mA
SINAD @ 2.5mA
4 6 8 10
TPC 17. SINAD/SFDR vs. I
OUTFS
(DC to f
DATA
/2, Single-Ended Output)
f
OUT
(MHz)
dB
75
70
60
65
0 0.5 2.51.0 1.5 2.0
S/E 0dBFS
DIFF 0dBFS
S/E –6dBFS
DIFF –6dBFS
80
85
TPC 12. SFDR vs. f
OUT
(DC to f
DATA
/2)
A
OUT
(dBFS)
dB
70
65
55
60
–30 –25 –5–20 –15 –10
SFDR @ 40MSPS
75
SFDR @ 20MSPS
SFDR @ 10MSPS
SINAD @ 20MSPS
SINAD @ 10MSPS
50
45
40
35
30
0
SINAD @ 40MSPS
TPC 15. SINAD vs. A
OUT
(DC to
f
DATA
/2, Single-Ended Output)
0
–10
–20
–30
–40
–50
–70
–60
–80
START: 0Hz
STOP: 10MHz
10dB (Div)
TPC 18. Narrow-Band Spread-
Spectrum Spectral Plot (DC to f
DATA
)
REV. C
REV. C