IC manufacturers Microchip

IC manufacturers (108)

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

Parts approved by Microchip

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Order Code
Data­sheet
Simu­lation
Downloads
Status
Product series
λDom typ.(nm)
Emitting Color
λPeak typ.(nm)
IV typ.(mcd)
VF typ.(V)
Chip Technology
2θ50% 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)
Application
Data rate
PoE
Ports
Tab
Improved CMRR
Operating Temperature
LED
PHY Chip Mode
Mount
Shield Tabs
SamplesAvailability & Sample
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SPECWL-SMCW SMT Mono-color Chip LED Waterclear, 570 nm, Bright Green
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Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction 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 °
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Size0603 
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Length1.6 mm
Width0.8 mm
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Height0.25 mm
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Weight0.8 mm
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Operating Temperature -40 °C up to +85 °C
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SPECWL-SMCW SMT Mono-color Chip LED Waterclear, 630 nm, Super Red
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ActiveProduction is active. Expected lifetime: >10 years.
iProduction 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 °
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Size0603 
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Length1.6 mm
Width0.8 mm
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Operating Temperature -40 °C up to +85 °C
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SPECWE-CBF SMT EMI Suppression Ferrite Bead, –, –
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Size0805 
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Length2 mm
Width1.2 mm
Pad Dimension0.5 mm
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Rated Current2000 mA
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Height0.9 mm
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Impedance @ 100 MHz300 Ω
Maximum Impedance350 Ω
Maximum Impedance200 MHz 
Rated Current 23000 mA
DC Resistance0.05 Ω
TypeHigh Current 
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Operating Temperature -55 °C up to +125 °C
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SPECWE-RJ45 LAN Transformer, –, –
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Length25.4 mm
Width16.1 mm
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Height13.55 mm
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ApplicationStandard 
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 
–Check availability
SPECWCAP-CSGP MLCCs 50 V(DC), –, –
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Capacitance15 pF
Capacitance±5% 
Rated Voltage50 V (DC)
Size0402 
Q-Factor700 
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Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Length1 mm
Width0.5 mm
Pad Dimension0.25 mm
Packaging7" Tape & Reel 
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SPECWCAP-CSGP MLCCs 50 V(DC), –, –
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Capacitance10 pF
Capacitance±5% 
Rated Voltage50 V (DC)
Size0603 
Q-Factor600 
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Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Length1.6 mm
Width0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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Height0.8 mm
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SPECWCAP-CSGP MLCCs 10 V(DC), –, –
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Capacitance1 µF
Capacitance±10% 
Rated Voltage10 V (DC)
Size0603 
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Dissipation Factor10 %
Insulation Resistance0.1 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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Height0.8 mm
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SPECWCAP-CSGP MLCCs 25 V(DC), –, –
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Capacitance100 nF
Capacitance±10% 
Rated Voltage25 V (DC)
Size0603 
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Dissipation Factor3.5 %
Insulation Resistance5 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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Height0.8 mm
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Operating Temperature -55 °C up to +125 °C
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SPECWCAP-CSGP MLCCs 50 V(DC), –, –
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Capacitance470 pF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0603 
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Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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Height0.8 mm
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SPECWCAP-CSGP MLCCs 50 V(DC), –, –
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Capacitance22 nF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0603 
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Dissipation Factor2.5 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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Height0.8 mm
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Operating Temperature -55 °C up to +125 °C
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SPECWCAP-CSGP MLCCs 50 V(DC), –, –
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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
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Capacitance47 nF
Capacitance±10% 
Rated Voltage50 V (DC)
Size0603 
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Dissipation Factor3 %
Insulation Resistance10 GΩ
Ceramic TypeX7R Class II 
Length1.6 mm
Width0.8 mm
Pad Dimension0.4 mm
Packaging7" Tape & Reel 
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Height0.8 mm
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Operating Temperature -55 °C up to +125 °C
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SPECWCAP-CSGP MLCCs 50 V(DC), –, –
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ActiveProduction is active. Expected lifetime: >10 years.
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Capacitance1 nF
Capacitance±5% 
Rated Voltage50 V (DC)
Size0805 
Q-Factor1000 
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Insulation Resistance10 GΩ
Ceramic TypeNP0 Class I 
Length2 mm
Width1.25 mm
Pad Dimension0.5 mm
Packaging7" Tape & Reel 
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Height0.8 mm
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Operating Temperature -55 °C up to +125 °C
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SPECWS-TASV J-Bend SMT Tact Switch 3.5x2.9 mm, –, –
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Rated Voltage12 V (DC)
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Insulation Resistance100 MΩ
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PackagingTape and Reel 
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Rated Current50 mA
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Height1.7 mm
Operation Force350 g
Electrical Life200000 Cycles
Actuator ColorBlue 
WashableNo 
Vaporphase processnot specified 
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Operating Temperature -40 °C up to +85 °C
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SPECWR-PHD Pin Header - Dual, –, –

PCN pending

Due to a pending PCN, a modification of the component will be implemented soon. Please find the PCN below. If you have further questions please get in contact with our sales staff.

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Insulation Resistance1000 MΩ
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Length10.16 mm
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PackagingBag 
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Pins8 
Rated Current3000 mA
Working Voltage250 V (AC)
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TypeStraight 
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Operating Temperature -40 °C up to +105 °C
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MountTHT 
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SPECWE-TVS TVS Diode – Super Speed Series, –, –
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ActiveProduction is active. Expected lifetime: >10 years.
iProduction is active. Expected lifetime: >10 years.
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Forward Voltage [typ.]0.9 V
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SizeDFN3810-9L 
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Length3.8 mm
Width1 mm
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Height0.5 mm
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Channels8 
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
ApplicationUSB 3.1 Gen1 (5Gb/s), USB 3.1 Type C, Display Port, HDMI 2.0, Ethernet 1Gb/s, Ethernet 10Gb/s 
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Operating Temperature -55 °C up to +85 °C
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MountSMT 
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SPECWE-XTAL Quartz Crystal, –, –
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Frequency25 MHz
Frequency±20ppm 
Stability30 ppm
Load Capacitance18 pF
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SizeCFPX-180 
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Length3.2 mm
Width2.5 mm
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Height0.8 mm
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ApplicationProcessor, USB, 3G/4G/5G, Ethernet, Small Cell, PHY, PCI Express 
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Operating Temperature -40 °C up to +85 °C
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MountSMT 
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SPECWRIS-RSKS Thick Film Resistors, –, –
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Size0603 
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Length1.6 mm
Width0.8 mm
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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
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Height0.45 mm
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Operating Temperature -55 °C up to +155 °C
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SPECWRIS-RSKS Thick Film Resistors, –, –
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Size0603 
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Length1.6 mm
Width0.8 mm
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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
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Height0.45 mm
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SPECWRIS-RSKS Thick Film Resistors, –, –
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Size0603 
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Length1.6 mm
Width0.8 mm
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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
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Height0.45 mm
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SPECWRIS-RSKS Thick Film Resistors, –, –
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iProduction is active. Expected lifetime: >10 years.
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Size0603 
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Length1.6 mm
Width0.8 mm
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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
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Height0.45 mm
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SPECWRIS-RSKS Thick Film Resistors, –, –
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ActiveProduction is active. Expected lifetime: >10 years.
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Size0603 
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Length1.6 mm
Width0.8 mm
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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
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Height0.45 mm
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Operating Temperature -55 °C up to +155 °C
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MountSMT 
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SPECWRIS-RSKS Thick Film Resistors, –, –
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iProduction is active. Expected lifetime: >10 years.
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Size0603 
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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 
–
–Check availability
SPECWRIS-RSKS Thick Film Resistors, –, –
Simu­lation
Availability
–
Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction 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 
–
–Check availability
SPECWRIS-RSKS Thick Film Resistors, –, –
Simu­lation
Availability
–
Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction 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 
–
–Check availability
SPECWRIS-RSKS Thick Film Resistors, –, –
Simu­lation
Availability
–
Status
ActiveProduction is active. Expected lifetime: >10 years.
iProduction 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 
–
–Check availability