IC manufacturers Microchip

IC manufacturers (103)

Microchip LAN9355 | Demoboard RD041

Design of a Single Pair Ethernet System with Power over Data Lines (SPoE)

Overview

TopologyLAN / POE
IC revision1.6

Description

This reference design note describes a system that cantransmit data between two points via a two-wire line. Themain unit supplies the peripheral unit with power via thesame two-wire line over which the data is transmitted. Thismethod is called "Single Pair Ethernet" with "Power over DataLines".

Features

 Supports multiple power levels of Power overEthernet Detecting and classifying the PD, sourcing the rightamount of power to the PD PoDL class 12 up to 30 V / 8.3 W USB 3.1 port (no power) 10 / 100 Mbit/s Ethernet port 10 Mbit/s SPE port Data transfer between USB 3.1 and 10 / 100 Mbit/sEthernet Data transfer between USB 3.1 and SPE (10 Mbit/s) Data transfer between SPE (10 Mbit/s) and10 / 100 Mbit/s Ethernet

Products

Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
λDom typ.(nm)
Emitting Color
λPeak typ.(nm)
IV typ.(mcd)
VF typ.(V)
Chip Technology
50% typ.(°)
f
Tol. f
Stability(ppm)
Cload(pF)
C
Tol. C
VR(V (DC))
Size
Q(%)
DF(%)
RISO
Ceramic Type
L(mm)
W(mm)
Fl(mm)
Packaging
R
Tol. R
PRated(W)
TCR(ppm/ °C)
TCR(ppm/ °C)
VE(V)
Pins
IR(mA)
Working Voltage(V (AC))
H(mm)
Operation Force(g)
Electrical Life(Cycles)
Actuator Color
Washable
Vaporphase process
m(mm)
Z @ 100 MHz(Ω)
Zmax(Ω)
Test Condition Zmax
IR 2(mA)
RDC max.(Ω)
Type
Channels
Polarity
VCh max.(V)
VBR min.(V)
CCh typ.(pF)
IPeak(A)
VCh Clamp ESD typ.(V)
VESD Contact(kV)
Data rate
PoE
Ports
Tab
Improved CMRR
Operating Temperature
LED
PHY Chip Mode
Mount
Shield Tabs
Samples
WL-SMCW SMT Mono-color Chip LED Waterclear, 570 nm, Bright Green
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Dominant Wavelength [typ.]570 nm
Emitting ColorBright Green 
Peak Wavelength [typ.]572 nm
Luminous Intensity [typ.]50 mcd
Forward Voltage [typ.]2 V
Chip TechnologyAlInGaP 
Viewing Angle Phi 0° [typ.]140 °
Size0603 
Length1.6 mm
Width0.8 mm
Height0.25 mm
Weight0.8 mm
Operating Temperature -40 °C up to +85 °C
MountSMT 
WL-SMCW SMT Mono-color Chip LED Waterclear, 630 nm, Super Red
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Dominant Wavelength [typ.]630 nm
Emitting ColorSuper Red 
Peak Wavelength [typ.]645 nm
Luminous Intensity [typ.]70 mcd
Forward Voltage [typ.]1.9 V
Chip TechnologyAlInGaP 
Viewing Angle Phi 0° [typ.]140 °
Size0603 
Length1.6 mm
Width0.8 mm
Height0.25 mm
Weight0.8 mm
Operating Temperature -40 °C up to +85 °C
MountSMT 
WE-CBF SMT EMI Suppression Ferrite Bead, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Size0805 
Length2 mm
Width1.2 mm
Pad Dimension0.5 mm
Rated Current2000 mA
Height0.9 mm
Impedance @ 100 MHz300 Ω
Maximum Impedance350 Ω
Maximum Impedance200 MHz 
Rated Current 23000 mA
DC Resistance0.05 Ω
TypeHigh Current 
Operating Temperature -55 °C up to +125 °C
MountSMT 
WE-RJ45 LAN Transformer, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Length25.4 mm
Width16.1 mm
Height13.55 mm
Data rate100BASE-TX 
PoEnon-PoE 
Ports1x1 
Tab PositionUp 
Improved Common Mode RejectionNo 
Operating Temperature -40 °C up to +85 °C
LED (Left-Right)green-yellow 
PHY Chip Modecurrent & voltage 
MountTHT 
Shield TabsYes 
WCAP-CSGP MLCCs 50 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Capacitance15 pF
Capacitance±5% 
Rated Voltage50 V (DC)
Size0402 
Q-Factor700 %
Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Length1 mm
Width0.5 mm
Pad Dimension0.25 mm
Packaging7" Tape & Reel 
Height0.5 mm
Operating Temperature -55 °C up to +125 °C
WCAP-CSGP MLCCs 50 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Capacitance10 pF
Capacitance±5% 
Rated Voltage50 V (DC)
Size0603 
Q-Factor600 %
Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Length1.6 mm
Width0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
Height0.8 mm
Operating Temperature -55 °C up to +125 °C
WCAP-CSGP MLCCs 10 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Capacitance1 µF
Capacitance±10% 
Rated Voltage10 V (DC)
Size0603 
Dissipation Factor10 %
Insulation Resistance0.1 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
Height0.8 mm
Operating Temperature -55 °C up to +125 °C
WCAP-CSGP MLCCs 25 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Capacitance100 nF
Capacitance±10% 
Rated Voltage25 V (DC)
Size0603 
Dissipation Factor3.5 %
Insulation Resistance5 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
Height0.8 mm
Operating Temperature -55 °C up to +125 °C
WCAP-CSGP MLCCs 50 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Capacitance470 pF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0603 
Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
Height0.8 mm
Operating Temperature -55 °C up to +125 °C
WCAP-CSGP MLCCs 50 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Capacitance22 nF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0603 
Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
Height0.8 mm
Operating Temperature -55 °C up to +125 °C
WCAP-CSGP MLCCs 50 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Capacitance47 nF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0603 
Dissipation Factor3 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
Height0.8 mm
Operating Temperature -55 °C up to +125 °C
WCAP-CSGP MLCCs 50 V(DC), –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Capacitance1 nF
Capacitance±5% 
Rated Voltage50 V (DC)
Size0805 
Q-Factor1000 %
Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Length2 mm
Width1.25 mm
Pad Dimension0.5 mm
Packaging7" Tape & Reel 
Height0.8 mm
Operating Temperature -55 °C up to +125 °C
WS-TASV J-Bend SMT Tact Switch 3.5x2.9 mm, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Rated Voltage12 V (DC)
Insulation Resistance100 MΩ
PackagingTape and Reel 
Rated Current50 mA
Height1.7 mm
Operation Force350 g
Electrical Life200000 Cycles
Actuator ColorBlue 
WashableNo 
Vaporphase processnot specified 
Operating Temperature -40 °C up to +85 °C
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Insulation Resistance1000 MΩ
Length10.16 mm
PackagingBag 
Pins
Rated Current3000 mA
Working Voltage250 V (AC)
TypeStraight 
Operating Temperature -40 °C up to +105 °C
MountTHT 
WE-TVS TVS Diode – Super Speed Series, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Forward Voltage [typ.]0.9 V
SizeDFN3810-9L 
Length3.8 mm
Width1 mm
Height0.5 mm
Channels
PolarityUnidirectional 
Channel Operating Voltage [max.]5 V
(Reverse) Breakdown Voltage [min.]6 V
(Channel) Input Capacitance [typ.]0.5 pF
(Reverse) Peak Pulse Current5 A
Channel ESD Clamping Voltage [typ.]10.5 V
ESD Contact Discharge Capability15 kV
Operating Temperature -55 °C up to +85 °C
MountSMT 
WE-XTAL Quartz Crystal, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Frequency25 MHz
Frequency±20ppm 
Stability30 ppm
Load Capacitance18 pF
SizeCFPX-180 
Length3.2 mm
Width2.5 mm
Height0.8 mm
Operating Temperature -40 °C up to +85 °C
MountSMT 
WRIS-RSKS Thick Film Resistors, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Size0603 
Length1.6 mm
Width0.8 mm
Resistance10 kΩ
Resistance±1% 
Rated Power0.1 W
Temperature Coefficient of Resistance (min.)-100 ppm/ °C
Temperature Coefficient of Resistance (max.)100 ppm/ °C
Limiting Element Voltage75 V
Height0.45 mm
Operating Temperature -55 °C up to +155 °C
MountSMT 
WRIS-RSKS Thick Film Resistors, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Size0603 
Length1.6 mm
Width0.8 mm
Resistance100 Ω
Resistance±1% 
Rated Power0.1 W
Temperature Coefficient of Resistance (min.)-100 ppm/ °C
Temperature Coefficient of Resistance (max.)100 ppm/ °C
Limiting Element Voltage75 V
Height0.45 mm
Operating Temperature -55 °C up to +155 °C
MountSMT 
WRIS-RSKS Thick Film Resistors, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Size0603 
Length1.6 mm
Width0.8 mm
Resistance1 kΩ
Resistance±1% 
Rated Power0.1 W
Temperature Coefficient of Resistance (min.)-100 ppm/ °C
Temperature Coefficient of Resistance (max.)100 ppm/ °C
Limiting Element Voltage75 V
Height0.45 mm
Operating Temperature -55 °C up to +155 °C
MountSMT 
WRIS-RSKS Thick Film Resistors, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Size0603 
Length1.6 mm
Width0.8 mm
Resistance330 Ω
Resistance±1% 
Rated Power0.1 W
Temperature Coefficient of Resistance (min.)-100 ppm/ °C
Temperature Coefficient of Resistance (max.)100 ppm/ °C
Limiting Element Voltage75 V
Height0.45 mm
Operating Temperature -55 °C up to +155 °C
MountSMT 
WRIS-RSKS Thick Film Resistors, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Size0603 
Length1.6 mm
Width0.8 mm
Resistance33 Ω
Resistance±1% 
Rated Power0.1 W
Temperature Coefficient of Resistance (min.)-100 ppm/ °C
Temperature Coefficient of Resistance (max.)100 ppm/ °C
Limiting Element Voltage75 V
Height0.45 mm
Operating Temperature -55 °C up to +155 °C
MountSMT 
WRIS-RSKS Thick Film Resistors, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Size0603 
Length1.6 mm
Width0.8 mm
Resistance2 kΩ
Resistance±1% 
Rated Power0.1 W
Temperature Coefficient of Resistance (min.)-100 ppm/ °C
Temperature Coefficient of Resistance (max.)100 ppm/ °C
Limiting Element Voltage75 V
Height0.45 mm
Operating Temperature -55 °C up to +155 °C
MountSMT 
WRIS-RSKS Thick Film Resistors, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Size0603 
Length1.6 mm
Width0.8 mm
Resistance4.7 kΩ
Resistance±1% 
Rated Power0.1 W
Temperature Coefficient of Resistance (min.)-100 ppm/ °C
Temperature Coefficient of Resistance (max.)100 ppm/ °C
Limiting Element Voltage75 V
Height0.45 mm
Operating Temperature -55 °C up to +155 °C
MountSMT 
WRIS-RSKS Thick Film Resistors, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Size0603 
Length1.6 mm
Width0.8 mm
Resistance1.5 kΩ
Resistance±1% 
Rated Power0.1 W
Temperature Coefficient of Resistance (min.)-100 ppm/ °C
Temperature Coefficient of Resistance (max.)100 ppm/ °C
Limiting Element Voltage75 V
Height0.45 mm
Operating Temperature -55 °C up to +155 °C
MountSMT 
WRIS-RSKS Thick Film Resistors, –, –
Simu­lation
Status Activei| Production is active. Expected lifetime: >10 years.
Size0603 
Length1.6 mm
Width0.8 mm
Resistance49.9 Ω
Resistance±1% 
Rated Power0.1 W
Temperature Coefficient of Resistance (min.)-100 ppm/ °C
Temperature Coefficient of Resistance (max.)100 ppm/ °C
Limiting Element Voltage75 V
Height0.45 mm
Operating Temperature -55 °C up to +155 °C
MountSMT