AD831–Typical Characteristics
30
1200
1000
INPUT RESISTANCE
INPUT CAPACITANCE
800
3.5
4.0
THIRD ORDER INTERCEPT – dBm
INPUT RESISTANCE – Ohms
25
V
S
= 8V
600
3.0
20
LO LEVEL = –10dBm
IF = 10.7MHz
∆f
= 20kHz
15
0
50
100
150
200 250 300 350
FREQUENCY – MHz
400
450
500
V
S
= 9V
400
2.5
200
2.0
0
50
100
150
FREQUENCY – MHz
200
250
Figure 13. Input Third Order Intercept, 9 V Single Supply
Figure 15. Input Impedance vs. Frequency, Z
IN
= R C
62.4
62.2
SECOND ORDER INTERCEPT – dBm
18
V
S
= 9V
17
16
62.0
61.8
61.6
61.4
61.2
61.0
60.8
60.6
60.4
60.2
0
50
100
150
200 250 300 350
FREQUENCY – MHz
400
450
500
LO LEVEL = –10dBm
IF = 10.7MHz
∆f
= 20kHz
NOISE FIGURE – dB
V
S
= 8V
15
14
13
12
11
10
9
8
50
100
150
FREQUENCY – MHz
200
250
Figure 14. Input Second Order Intercept,
9 V Single Supply
Figure 16. Noise Figure vs. Frequency,
Matched Input
–6–
REV. B
INPUT CAPACITANCE – pF
AD [ ANALOG DEVICES ]
