Datasheet

–8–
AD9761—Typical Performance Characteristics
AD9761
–9–
Typical AC Characterization Curves @ 5 V Supplies
(AVDD = 5 V, DVDD = 5 V, 50  Doubly Terminated Load, T
A
= 25C, f
CLOCK
= 40 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: 40MHz
10dB (Div)
–100
TPC 1. Single-Tone SFDR (DC
to 2 f
DATA
, f
CLOCK
= 2 f
DATA
)
f
OUT
(MHz)
dB
75
70
60
65
2.0 4.0 10.0
S/E 0dBFS
DIFF 0dBFS
S/E –6dBFS
DIFF –6dBFS
55
50
0 6.0 8.0
TPC 4. Out-of-Band SFDR vs.
f
OUT
(f
DATA
/2 to 3/2 f
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 7. SINAD/SFDR vs. I
OUTFS
(DC to f
DATA
/2, Differential Output)
f
OUT
(MHz)
dB
65
60
50
55
0 2.0 10.04.0 6.0 8.0
10.50
9.67
8.01
8.84
ENOB
S/E 0dBFS
DIFF 0dBFS
S/E –6dBFS
DIFF –6dBFS
TPC 2. SINAD (ENOBs) vs.
f
OUT
(DC to f
DATA
/2)
A
OUT
(dBFS)
dB
80
75
60
65
–25 –20 –5
SFDR @ 40MSPS
55
50
–30 –15 –10
SINAD @ 40MSPS
SFDR @ 20MSPS
SINAD @ 20MSPS
SFDR @ 10MSPS
SINAD @ 10MSPS
70
45
40
35
–0
TPC 5. SINAD vs. A
OUT
(DC to
f
DATA
/2, Differential Output)
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 8. SINAD/SFDR vs. I
OUTFS
(DC to f
DATA
/2, Single-Ended Output)
f
OUT
(MHz)
dB
80
75
65
70
0 5.0 10.0
S/E 0dBFS
DIFF 0dBFS
S/E –6dBFS
DIFF –6dBFS
TPC 3. SFDR vs. f
OUT
(DC to f
DATA
/2)
A
OUT
(dBFS)
dB
80
75
60
65
–25 –20 –5
SFDR @ 40MSPS
55
50
–30 –15 –10
SINAD @ 40MSPS
SFDR @ 20MSPS
SINAD @ 20MSPS
SFDR @ 10MSPS
SINAD @ 10MSPS
70
45
40
35
0
TPC 6. SINAD vs. A
OUT
(DC to
f
DATA
/2, Single-Ended Output)
–45
–65
–55
–75
–85
START: 0Hz
STOP: 20MHz
10dB (Div)
–105
–95
TPC 9. Wideband Spread-
Spectrum Spectral Plot (DC to f
DATA
)
REV. C
REV. C