Datasheet

AD8122 Data Sheet
Rev. 0 | Page 8 of 20
TYPICAL PERFORMANCE CHARACTERISTICS
T
A
= 25°C, V
S
= ±5 V, Category 5e UTP cable, input V
CM
= 0 V, V
OFFSET
= 0 V, V
PEAK
, V
GAIN
, and V
FILTER
are set to the recommended settings
shown in Figure 24, unless otherwise noted. For G = 2, R
L
= 150 Ω and V
OUT
= 2 V p-p; for G = 1, R
L
= 1 kΩ and V
OUT
= 1 V p-p.
–18
–15
–12
–9
–6
–3
0
3
6
0.1 1 10 100
GAIN (dB)
FREQUENCY (MHz)
100m
150m
200m
250m
300m
10780-004
Figure 4. Equalized Frequency Response for Various UTP Cable Lengths, G = 1
–18
–15
–12
–9
–6
–3
0
3
6
0.1 1 10 100
GAIN (dB)
FREQUENCY (MHz)
100m
150m
200m
10780-005
Figure 5. Equalized Frequency Response for Various Coaxial Cable Lengths,
G = 1
–12
–9
–6
–3
0
3
10.1 10 100
GAIN (dB)
FREQUENCY (MHz)
V
GAIN
= 1.37V
V
PEAK
= 1.86V
V
FILTER
= 2V
10780-006
V
FILTER
= 1.7V
V
FILTER
= 0V
Figure 6. Equalized Frequency Response for Various V
FILTER
Levels,
300 m Cable Length, G = 1
–12
–9
–6
–3
0
3
6
9
12
0.1 1 10 100
GAIN (dB)
FREQUENCY (MHz)
100m
150m
200m
250m
300m
10780-007
Figure 7. Equalized Frequency Response for Various UTP Cable Lengths, G = 2
–12
–9
–6
–3
0
3
6
9
12
0.1 1 10 100
GAIN (dB)
FREQUENCY (MHz)
10780-008
100m
150m
200m
Figure 8. Equalized Frequency Response for Various Coaxial Cable Lengths,
G = 2
10.1 10 10010.1 10 100
–6
–3
0
3
6
9
12
GAIN (dB)
FREQUENCY (MHz)
V
GAIN
= 1.37V
V
PEAK
= 1.86V
10780-009
V
FILTER
= 2V
V
FILTER
= 1.7V
V
FILTER
= 0V
Figure 9. Equalized Frequency Response for Various V
FILTER
Levels,
300 m Cable Length, G = 2