MAX3787 Datasheet, PDF (4/15 Pages) Maxim Integrated Products – 1Gbps to 12.5Gbps Passive Equalizer for Backplanes and Cables

1Gbps to 12.5Gbps
Passive Equalizer for Backplanes and Cables
FREQUENCY
100MHz
200MHz
300MHz
500MHz
1.0GHz
2.0GHz
3.0GHz
4.0GHz
5.0GHz
5.5GHz
6.0GHz
6.5GHz
7.0GHz
7.5GHz
8.0GHz
8.5GHz
9.0GHz
9.5GHz
10.0GHz
MIN
(dB)
-8.2
-7.9
-7.5
-6.8
-5.5
-4.2
-3.1
-2.3
-2.1
-2.4
-2.9
—
—
—
—
—
—
—
—
Figure 3. Through Response Limits
TYP
(dB)
-7.4
-7.0
-6.6
-6.0
-4.8
-3.2
-2.2
-1.5
-1.3
-1.6
-2.1
-2.6
-3.1
-3.6
-4.1
-4.7
-5.5
-7.0
-9.0
MAX
(dB)
-6.8
-6.4
-6.0
-5.3
-4.2
-2.5
-1.5
-0.8
-0.5
-0.6
-1.1
—
—
—
—
—
—
—
—
THROUGH-RESPONSE LIMITS
(RELATIVE TO IDEAL LOAD)
0
-1
-2
-3
MAX
-4
-5
TYP
-6
-7
MIN
-8
-9
0 1 2 3 4 5 6 7 8 9 10
FREQUENCY (GHz)
Table 1. PCB Assumptions (Board Material is FR4)
PARAMETER
Transmission Line
Relative Permittivity at 1GHz
Loss Tangent
Metal Thickness
Impedance
CONDITIONS
Edge-coupled microstrip line
FR4 or similar
FR4 or similar
1oz copper
Differential
MIN TYP MAX UNITS
6
mil
4.0
—
0.02
—
1.4
mil
90
100
110
Ω
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