Datasheet

AD768
REV. B
–9–
Typical Performance Curves––AD768
0.2
0.0
–0.2
–0.4
–0.6
–0.8
–1.0
VOLTS
TIME – 5ns/Div
R
L
= 50Ω
V
OUT
= 0 TO –1V
Figure 14. Rise and Fall
Characteristics
10k 2.0M1.0M
OUTPUT – dB
FREQUENCY – Hz
CLOCK = 10MHz
F
OUT
= 1.002MHz
AMPLITUDE = 0dBm
0
–20
–40
–60
–80
–100
Figure 17. Typical SFDR
(With a Window)
FREQUENCY – Hz
OUTPUT – dB
0
–100
150 350
190 230 270 310
–60
–80
–40
–20
CLOCK = 10 MHz
F
OUT1
= 240 kHz
F
OUT2
= 260 kHz
AMPLITUDE = –6.0 dB FS
PER TONE
OUTPUT IOUTB
R
L
= 50Ω
Figure 20. Intermodulation
Distortion
R
L
= 50Ω
V
OUT
= 0 TO –1V
–0.470
–0.472
–0.474
–0.476
–0.478
–0.480
–0.482
OUTPUT – V
TIME – 2ns/Div
Figure 13. Glitch Impulse at Major
Carry
50.1 3241
OUTPUT – dB
FREQUENCY – MHz
0
–20
–40
–60
–80
–100
CLOCK = 10MHz
F
OUT
= 1.002MHz
AMPLITUDE = 0dBm
OUTPUT IOUTB
R
L
= 50Ω
Figure 16. Typical Spectral
Performance
FREQUENCY – MHz
THD – dB
–80
–75
–50
0.01 0.1 10
1
–65
–60
–55
–70
CLOCK = 1MHz
CLOCK = 10MHz
CLOCK = 20MHz
CLOCK = 30MHz
CLOCK = 40MHz
Figure 19. THD vs. F
OUT
Figure 12. Settling Time
FREQUENCY – MHz
–80
–75
–50
42040
THD – dB
–65
–60
–55
–70
5678910 30
R
L
= 50Ω
V
OUT
= 0 TO –1V
Figure 15. THD vs. Clock Frequency
at F
OUT
= 1 MHz
1
10
FREQUENCY – MHz
CLOCK = 30MHz
CLOCK = 20MHz
–86
–82
–50
–78
–74
–70
–66
–62
–58
–54
SFDR
CLOCK = 10MHz
Figure 18. SFDR (Within a Window)
vs. F
OUT
–0.9405
–0.9443
–0.9415
–0.9424
–0.9433
–0.9453
–0.9500
–0.9462
–0.9472
–0.9498
–0.9481
12 24 3614 16 18 20 22 3426 28 30 32
1.00
0.60
0.90
0.80
0.70
0.50
0.10
0.40
0.30
0.20
0.025
0.05
OUTPUT – dB
ERROR BAND – %
TIME – ns
R
L
= 50Ω
V
OUT
= 0 TO –1V