Datasheet

AD8108/AD8109
Rev. B | Page 12 of 32
FREQUENCY (Hz)
GAIN (dB)
4
3
100k 1M 1G10M 100M
2
1
–3
0
–1
–2
0.4
0.3
0.2
–0.2
0.1
0
–0.1
–0.3
FLATNESS
GAIN
FLATNESS (dB)
2V p-p
200mV p-p
2V p-p
5
–0.4
01068-018
Figure 13. AD8109 Frequency Response
FREQUENCY (Hz)
300k 1M 10M 100M
CROSSTALK (dB)
–20
–30
ADJACENT
–40
–50
–90
–60
–70
–80
–100
–110
R
L
= 1kΩ
ALL HOSTILE
200M
01068-019
Figure 14. AD8109 Crosstalk vs. Frequency
FREQUENCY (Hz)
100k 1M 10M 100M
DISTORTION (dB)
–30
–40
–50
–60
–70
–80
–90
–100
2ND HARMONIC
3RD HARMONIC
R
L
= 150Ω
V
OUT
= 2V p-p

01068-020
Figure 15. AD8109 Distortion vs. Frequency
+50mV
+25mV
0
–25mV
–50mV
25mV/DIV
10ns/DIV
01068-021
Figure 16. AD8109 Step Response, 100 mV Step
+1.0V
+0.5V
0
–0.5V
–1.0V
0.5V/DIV
10ns/DIV
01068-022
Figure 17. AD8109 Step Response, 2 V Step
2V STEP
R
L
= 150Ω
0 1020304050607080
10ns/DIV
0
0.1
0.2
–0.1
–0.2
0.1%/DIV
01068-023
Figure 18. AD8109 Settling Time