Typical Performance Characteristics– AD9203
(AVDD = +3 V, DRVDD = +3 V, F
S
= 40 MSPS, 1 V Internal Reference, PWRCON = AVDD, 50% Duty Cycle, unless otherwise noted)
61
2V SINGLE-ENDED INPUT
59
2V DIFFERENTIAL INPUT
57
55
SFDR – dB
SNR – dB
75
70
65
60
55
50
45
49
1V SINGLE-ENDED INPUT
47
0
20
40
60
80
INPUT FREQUENCY – MHz
100
120
40
35
0
20
40
60
80
INPUT FREQUENCY – MHz
100
120
2V SINGLE-
ENDED INPUT
2V DIFFERENTIAL
INPUT
1V SINGLE-
ENDED INPUT
1V DIFFERENTIAL
INPUT
85
80
53
1V DIFFERENTIAL INPUT
51
Figure 2. SNR vs. Input Frequency and Configuration
Figure 5. SFDR vs. Input Frequency and Configuration
60
2V DIFFERENTIAL
INPUT
55
9.0
–80
–75
8.8
–70
–65
1V DIFFERENTIAL
INPUT
2V DIFFERENTIAL
INPUT
1V SINGLE-
ENDED INPUT
SINAD – dB
1V DIFFERENTIAL INPUT
45
1V SINGLE-
ENDED INPUT
40
2V SINGLE-
ENDED INPUT
35
0
20
40
60
80
INPUT FREQUENCY – MHz
100
5.5
120
6.3
7.1
ENOB
50
8.0
THD – dB
–60
–55
–50
–45
–40
–35
–30
0
2V SINGLE-
ENDED INPUT
20
40
60
80
INPUT FREQUENCY – MHz
100
120
Figure 3. SINAD vs. Input Frequency and Configuration
Figure 6. THD vs. Input Frequency and Configuration
–75
–70
–0.5dB
–65
THD – dB
–60
–55
–50
–20dB
–45
THD – dB
–75
–0.5dB
–65
–6.0dB
–6.0dB
–55
–20dB
–45
–40
0
20
40
60
80
INPUT FREQUENCY – MHz
100
120
–35
0
20
40
60
80
INPUT FREQUENCY – MHz
100
120
Figure 4. THD vs. Input Frequency and Amplitude (Differ-
ential Input VREF = 0.5 V)
Figure 7. THD vs. Input Frequency and Amplitude (Differ-
ential Input VREF = 1 V)
REV. 0
–7–
AD [ ANALOG DEVICES ]
