AD9221/AD9223/AD9220
AD9220–Typical Characterization Curves
(AVDD = +5 V, DVDD = +5 V, f
1.0
0.8
0.6
0.4
INL – LSBs
DNL – LSBs
0.2
0.0
–0.2
–0.4
–0.6
–0.8
–1.0
1
4095
1.0
0.8
0.6
0.4
0.2
0.0
–0.2
–0.4
–0.6
–0.8
–1.0
CODE
1
CODE
4095
N–1
N
CODE
N+1
134,613
130,323
HITS
8,123,672
SAMPLE
= 10 MSPS, T
A
= +25 C)
Figure 20. Typical DNL
Figure 21. Typical INL
Figure 22. “Grounded-Input”
Histogram (Input Span = 2 V p-p)
80
75
70
80
75
70
–6dB
SINAD – dB
–50
–55
–0.5dB
–60
–65
–0.5dB
–6.0dB
THD – dB
65
60
55
50
45
40
0.1
–20dB
SINAD – dB
–70
–75
–20dB
65
60
55
50
45
40
0.1
1.0
FREQUENCY – MHz
10.0
–20.0dB
–6dB
–80
–85
–90
–95
–0.5dB
1.0
FREQUENCY – MHz
10.0
–100
0.5
1.0
FREQUENCY – MHz
10.0
Figure 23. SINAD vs. Input Fre-
quency (Input Span = 2.0 V p-p,
V
CM
= 2.5 V)
–50
–55
–60
–20.0dB
Figure 24. THD vs. Input Frequency
(Input Span = 2.0 V p-p, V
CM
= 2.5 V)
Figure 25. SINAD vs. Input Fre-
quency (Input Span = 5.0 V p-p,
V
CM
= 2.5 V)
90
80
SFDR
–60
–65
–70
THD – dB
–75
–80
–85
–90
–95
–100
1.0
FREQUENCY – MHz
10.0
5V p-p
SNR/SFDR – dB
70
60
SNR
50
40
30
20
10
–60
–50
–40
–30
–20
A
IN
– dBFS
–10
0
THD – dB
–65
–70
–75
–80
–85
–90
0.1
–0.5dB
–6.0dB
2V p-p
1
10
SAMPLE RATE – MSPS
15
Figure 26. THD vs. Input Frequency
(Input Span = 5.0 V p-p, V
CM
= 2.5 V)
Figure 27. THD vs. Clock Frequency
(A
IN
= –0.5 dB, f
IN
= 1.0 MHz, V
CM
=
2.5 V)
Figure 28. SNR/SFDR vs. A
IN
(Input
Amplitude) (f
IN
= 5.0 MHz, Input
Span = 2 V p-p, V
CM
= 2.5 V)
–8–
REV. D
AD [ ANALOG DEVICES ]
