AD831–Typical Characteristics
30
65
THIRD ORDER INTERCEPT – dBm
25
SECOND ORDER INTERCEPT – dBm
64
20
63
15
62
10
61
5
0
10
100
FREQUENCY – MHz
1000
60
10
100
FREQUENCY – MHz
1000
Figure 1. Third-Order Intercept vs. Frequency,
IF Held Constant at 10.7 MHz
Figure 4. Second-Order Intercept vs. Frequency
80
70
60
90
80
70
ISOLATION – dB
50
40
30
20
10
0
10
ISOLATION – dB
60
50
40
30
20
10
0
10
100
FREQUENCY – MHz
1000
100
FREQUENCY – MHz
1000
Figure 2. IF-to-RF Isolation vs. Frequency
Figure 5. LO-to-RF Isolation vs. Frequency
60
2 x LO-to-IF
50
3 x LO-to-IF
80
3 x RF-to-IF
70
2 x RF-to-IF
60
2 x RF-to-IF
50
40
30
20
RF-to-IF
RF-to-IF
3 x RF-to-IF
ISOLATION – dB
LO
30
20
10
ISOLATION – dB
40
10
0
10
0
10
100
FREQUENCY – MHz
1000
100
FREQUENCY – MHz
1000
Figure 3. LO-to-IF Isolation vs. Frequency
Figure 6. RF-to-IF Isolation vs. Frequency
–4–
REV. B
AD [ ANALOG DEVICES ]
