AD8307
3
2
3.0
2.5
2.0
1.5
1.0
0.5
0
INT P = 3.0V
IN
10MHz, INT = –96.52dBm
100MHz
1
INT P = 4.0V
10MHz, INT = –87.71dBm
IN
+ INPUT
0
–1
–2
–3
NO CONNECT ON INT
10MHz, INT = –82.90dBm
– INPUT
–80
–60
–40
–20
0
20
–80 –70 –60 –50 –40 –30 –20 –10
0
10
20
INPUT LEVEL – dBm
INPUT LEVEL – dBm
Figure 7. VOUT vs. Input Level at 5 V Supply; Showing
Intercept Adjustm ent
Figure 10. Log Conform ance vs. Input Level at 100 MHz;
Showing Response to Alternative Inputs
3
3.0
INT VOLTAGE
INT = 1.0V, INT = –86dBm
2.5
2
500MHz
2.0
1
0
INT VOLTAGE
INT NO CONNECT, INT = –71dBm
1.5
1.0
–1
100MHz
0.5
–2
–3
INT VOLTAGE
INT = 2.0V, INT = –78dBm
0
–80
–90
–70
–50
–30
–10
10
–70 –60
–50 –40
–30 –20
–10
0
10
INPUT LEVEL – dBm
INPUT LEVEL – dBm
Figure 8. VOUT vs. Input Level at 3 V Supply Using AD820
as Buffer, Gain = +2; Showing Intercept Adjustm ent
Figure 11. Log Conform ance vs. Input at 100 MHz, 500 MHz;
Input Driven Differentially Using Transform er
3
2.5
2.0
2
500MHz
1
1.5
100MHz @ –40؇C
0
100MHz
1.0
0.5
0
100MHz @ +25؇C
–1
10MHz
–2
–3
100MHz @ +85؇C
–70
–60
–50
–40
–30
–20
–10
0
10
20
–80
–60
–40
–20
0
20
INPUT LEVEL – dBm
INPUT LEVEL – dBm
Figure 9. VOUT vs. Input Level at Three Tem peratures
(–40°C, +25°C, +85°C)
Figure 12. Log Conform ance vs. Input Level at 3 V Supply
Using AD820 as Buffer, Gain = +2
REV. A
–5–
ADI [ ADI ]
