Datasheet

QUICK START GUIDE FOR DEMONSTRATION CIRCUIT 590B
USB SERIAL CONTROLLER FOR LINEAR TECHNOLOGY QUICKEVAL™ DEMO BOARDS
2
Figure 2. Basic Connections
Demo Circuit
Under Evaluation
USB Cable
To Host PC
ISOLATED
GROUND
C
onnect 2.7 to 5V Logic supply ONLY IF
VCCIO is set to EXT. See Text.
Connect external 10-12V sup
ply ONLY
IF JP5, ISO is set to OFF. See Text.
Do Not Connect
Isolated Power Supply
(Shown in OFF position)
Select Isolated Sup
ply
Voltage (2.7V, 3.3V,
5.0V, or External
Do Not Connect