AD775
54
48
42
36
30
24
18
12
6
–30
–36
–42
–48
–54
0
0.1
1
10
0.1
1
10
f
IN
– MHz
f
– MHz
IN
Figure 2. S/(N + D) vs. Input Frequency at 20 MSPS Clock
Rate (VIN = –0.3 dB)
Figure 5. THD vs. Input Frequency at 20 MSPS Clock Rate
(VIN = –0.3 dB)
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
0
–10
–20
–30
–40
–50
–60
–70
–80
–90
–100
0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0 10.0
0
1.0
2.0
3.0
4.0
5.0
6.0
7.0
8.0
9.0 10.0
FREQUENCY – MHz
FREQUENCY – MHz
Figure 3. Typical FFT at 1 MHz Input, 20 MSPS Clock Rate
(VIN = –0.5 dB)
Figure 6. Typical FFT at 5 MHz Input, 20 MSPS Clock Rate
(VIN = –0.5 dB)
+0.4
+0.3
+0.2
+0.1
0
+1
0
–0.1
–0.2
–0.3
–0.4
–1
–FULLSCALE
+FULLSCALE
–FULLSCALE
+FULLSCALE
Figure 4. Typical Differential Nonlinearity (DNL)
Figure 7. Typical Integral Nonlinearity (INL)
REV. 0
–5–
ADI [ ADI ]
