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dc1843bfa

DEMO MANUAL DC1843B

DESCRIPTION

DC1842B and DC1680B

LTC4290B/LTC4271

8-Port PSE with Digital Isolation

Demonstration kit DC1843B is an 8-port IEEE 802.3at

Type 2 power sourcing equipment (PSE) composed of a

DC1842B daughter card and DC1680B motherboard. The

kitisusedforevaluationoftheLTC4290BandLTC4271PSE

chipset. Up to 8 powered devices (PDs) can be connected

andpoweredfromthissystemusingasinglepowersupply.

with QuikEval™. This demonstration manual provides a

Quick Start Procedure, a DC1842B overview, a DC1680B

overview, schematics, and layout printouts. Refer to the

Layout Guide for Demonstration Circuit 1842B when

L

, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks and

QuikEval is a trademark of Linear Technology Corporation. All other trademarks are the property

of their respective owners.

BOARD PHOTO

laying out the LTC4290B/LTC4271 circuit. Contact Linear

Technology for this document.

The DC1842B has increased surge protection over the

DC1842A.TheDC1680BusesdiscreteEthernettransform-

erswhiletheDC1680Ahasanintegrated12-portRJ45jack.

Design files for this circuit board are available at

http://www.linear.com/demo/DC1843B