Quick Start Procedure - Linear Technology 1814A Demo Manual

DEMO MANUAL
DC1814A

Quick start proceDure

Demonstration circuit 1814A is easy to set up for evaluat-
ing the performance of the LTC4274A. Refer to Figure 1
for proper test equipment setup and follow the procedure
below.
1. Connect a 55V to 57V power supply across AGND (+)
and VEE (–). Size the power supply considering the
maximum power delivered to the PD.
2
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2. Connect an 802.3 Type 1 or Type 2, or LTPoE ++ compat-
ible PD to RJ45 connector J1 with an Ethernet cable.
3. Measure the port output voltage to the PD across
VPORT+ and VPORT– test points.
4. (Optional) Connect a PHY to RJ45 connector J2 with
an Ethernet cable for data tests.
Figure 1. DC1814A Setup
dc1814afe