Datasheet

AD8108/AD8109
Rev. B | Page 11 of 32
TYPICAL PERFORMANCE CHARACTERISTICS
FREQUENCY (Hz)
GAIN (dB)
5
4
100k 1M 1G
10M 100M
3
2
–2
1
0
–1
–3
0.4
0.3
0.2
0.1
–0.3
0
–0.1
–0.2
–0.4
FLATNESS
GAIN
FLATNESS (dB)
2V p-p
200mV p-p
R
L
= 150Ω
01068-012
Figure 7. AD8108 Frequency Response
FREQUENCY (MHz)
0.2 1 20010 100
CROSSTALK (dB)
–10
–20
–110
–30
–40
–50
–60
–70
–80
–90
–100
ADJACENT
ALL HOSTILE
R
L
= 1kΩ
01068-013
Figure 8. AD8108 Crosstalk vs. Frequency
R
L
= 150Ω
V
OUT
= 2V p-p

FREQUENCY (Hz)
100k 1M 10M 100M
DISTORTION (dB)
–30
–40
–50
–60
–70
–80
–90
–100
2ND HARMONIC
3RD HARMONIC
01068-014
Figure 9. AD8108 Distortion vs. Frequency
+50mV
+25mV
0
–25mV
–50mV
25mV/DIV
10ns/DIV
01068-015
Figure 10. AD8108 Step Response, 100 mV Step
+1.0V
+0.5V
0
–0.5V
–1.0V
500mV/DIV
10ns/DIV
01068-016
Figure 11. AD8108 Step Response, 2 V Step
2V STEP
R
L
=150Ω
01020304050607080
10ns/DIV
0
0.1
0.2
–0.1
–0.2
0.1%/DIV
01068-017
Figure 12. AD8108 Settling Time