UG-250

Evaluation Board User Guide

Rev. A | Page 4 of 12

Table 2. Link Options

Link No.

Description

LK1

LK2

This link enables/disables the MOSFET device.

Position A disables the MOSFET device.

LK4

This link enables/disables the iCoupler® digital isolators.

When this link is inserted, the isolators are enabled.

When this link is removed, the isolators are disabled.

LK6

This link should be inserted when the MOSFET device is enabled (LK2 in Position B).

This link should be removed when the MOSFET device is disabled (LK2 in Position A).

LK7

This link completes the loop connection if a load resistor is not connected at Connector J7.

This link should be inserted if a load resistor is not connected at Connector J7.

This link should be removed if a load resistor is connected at Connector J7.

Alarm_Dir

This link selects the alarm current direction.

Position A selects an upscale alarm current (22.8 mA or 24 mA).

Position B selects a downscale alarm current (3.2 mA).

Rint_Rext

This link selects to use either the internal or external current setting resistor.

Position A selects the internal resistor.

Position B selects the external resistor.

Range0,

Range1

These links select the loop current range.

Range1

Range0

Loop Range

B

B

4 mA to 20 mA

B

A

3.8 mA to 21 mA

A

B

3.2 mA to 24 mA

A

A

3.8 mA to 21 mA

Reg_Sel2,

Reg_Sel1,

Reg_Sel0

These links select the voltage regulator output voltage.

Reg_Sel2

Reg_Sel1

Reg_Sel0

Regulator Output Voltage

B

B

B

1.8 V

B

B

A

2.5 V

B

A

B

3 V

B

A

A

3.3 V

A

B

B

5 V

A

B

A

9 V

A

A

B

12 V