Datasheet

AD8370 Data Sheet
Rev. B | Page 10 of 28
–90
–80
–70
–60
–50
–40
–30
–20
–10
0
HARMONIC DISTORTION (dBc)
20015050 1000 250 300 350 400
FREQUENCY (MHz)
03692-020
HD
2
R
L
= 100Ω
HD
3
R
L
= 100Ω
HD
3
R
L
= 1kΩ
HD
2
R
L
= 1kΩ
Figure 22. Harmonic Distortion vs. Frequency at Maximum Gain,
V
OUT
= 2 V p-p Composite Differential
0
20
40
60
80
100
120
RESISTANCE (Ω)
–40
–20
0
20
40
60
80
REACTANCE (j Ω)
0 100 200 300 400 500 600 700
FREQUENCY (MHz)
03692-021
16 DIFFERENT GAIN
CODES REPRESENTED
R+jX FORMAT
Figure 23. Output Resistance and Reactance vs. Frequency
700
720
740
760
780
800
GROUP DELAY (ps)
820
840
860
0 10 20 30 40 60 10050 70 80 90 110 120 130
GAIN CODE
03692-022
HIGH GAIN MODE
LOW GAIN MODE
Figure 24. Group Delay vs. Gain Code at 70 MHz
20
30
40
50
60
70
80
90
100
110
120
PSRR (dB)
FREQUENCY (MHz)
1 10010 1000
03692-023
Figure 25. Power Supply Rejection Ratio vs. Frequency at Maximum Gain
–120
–100
–80
–60
–40
–20
0
ISOLATION (dB)
FREQUENCY (MHz)
10 100 1000
03692-024
FORWARD TRANSMISSION, HG0
REVERSE TRANSMISSION, HG127
FORWARD TRANSMISSION, LG0
FORWARD TRANSMISSION, PWUP LOW
Figure 26. Various Forms of Isolation vs. Frequency
600
700
800
900
1000
1100
GROUP DELAY (ps)
1200
1300
1400
0 100 200 300 400 500 600 700 800 900
FREQUENCY (MHz)
03692-025
R
L
= 1kΩ
R
L
= 100Ω
Figure 27. Group Delay vs. Frequency at Maximum Gain