EQCO400T8 Datasheet, PDF (9/24 Pages) Microchip Technology – EQCO400T8 UTP Cable Equalizer

EQCO400T8
2.0 APPLICATION INFORMATION
Figure 2-1 illustrates a typical schematic implementation.
In this diagram, data is transmitted on pins 1 and 2, and
received on pins 3 and 6 of the RJ45.
FIGURE 2-1:
EQCO400T-8 TYPICAL APPLICATION CIRCUIT
RJ45
1
2
3
4
5
6
7
8
Coilcraft
0603USB-222ML
0.1uF
Coilcraft
0603USB-222ML
0.1uF 0.1uF
Coilcraft
WBC1-TLB
Coilcraft
0603USB-222ML
3V3
PHY
Termination
Network
6p8
Check PHY
datasheet
Keep Close to PHY!
Coilcraft
0603USB-222ML
0.1uF
Coilcraft
WBC1-TLB
0.1uF
SDIp
VCC
SDIn
GND
SDOp
VCC
SDOn
0.1uF
0.1uF
0.1uF
PHY
Termination
Network
Check PHY
datasheet
Keep Close to PHY!
Remove Power planes below these components
GND
GND
GND
Light Emitting Diode
GND
To improve isolation from noise on the board power
plane, it is recommended to power the equalizer
through a ferrite bead. A 0.1 μF decoupling capacitor
should be placed as close as possible to each VCC pin.
Ground vias should be placed as close as possible to
the device GND pins to minimize inductance. To
reduce electromagnetic emissions, it may be advised
to place a 6.8 pF capacitor in between TPB and TPB*
(transmit LVDS) of the PHY to reduce the rise/fall time
of the transmitted signals. If fitted, the capacitor should
be placed as close as possible to the pins of the PHY.
TPB
TPB*
1394b
PHY
(part)
TPA
TPA*
 2006-2016 Microchip Technology Inc.
DS60001310B-page 9