EQCO62T20.3 Datasheet, PDF (8/32 Pages) Microchip Technology – EQCO62T20.3 6.25 Gbps Asymmetric Coax Driver

EQCO62T20.3/EQCO31T20.3
2.0 APPLICATION INFORMATION
Figure 2-1 illustrates a typical schematic implementation.
FIGURE 2-1:
EQCO62T20.3 TYPICAL APPLICATION CIRCUIT
TABLE 2-1: COMPONENT RECOMMENDATION FOR THE EQCO62T20.3 BOARD LAYOUT
Element
Fb1, Fb2
L1
R1
R3
C1
C2
C3, C4, C5
C6
C7
C8, C9, C10
BNC1
Value
1 kΩ @ 100 MHz Ferrite Bead
10 µH
75Ω ±1%
1 kΩ
33 nF, 50V, X7R
33 nF, X7R
100 nF, X7R
10 nF, 50V, X7R
1 µF, 50V, X7R
10 nF, X7R
75Ω right angle BNC connector
Size
0603
1812
0402
0402
0603
0402/0603
0402
0402
0805
0402
Recommended Component
FBMH1608HM102 from Taiyo Yuden (Critical)
1812PS_103 from Coilcraft (Critical)
5413558-1 from Tyco (Recommended)
Ferrite Beads Fb1 and Fb2 (FBMH1608HM102 from
Taiyo Yuden) and inductor L1 (1812PS_103 from
Coilcraft [10 µH]) are recommended for CoaXPress.
For other applications the inductor value can be larger,
leading to a physical larger inductor.
Connector BNC1 (75Ω right angle BNC connector
5413558-1 from Tyco) is recommended for CoaXPress.
Other inductors/ferrite beads/BNC connectors can
possibly be used, however, they must be selected
carefully for their RF-performance, since performance
can decrease significantly.
DS60001301B-page 8
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