PA2423L-EK1

RangeCharger

13-DST-03

Rev 2.3

Jan-18-2005

2 of 8

QA011805

Evaluation Board Schematic

Figure 2: PA2423L Evaluation Board Schematic Diagram

Please Note: The RFOUT connector forms part of the output match of the power amplifier.

Pin

Pin Number

Description

Recommended setting

VCC

1

Supply Voltage

Connect system supply voltage

GND

2

Ground

Connect to system ground

VCC

3

Supply Voltage

Use this VCC to connect to VCTL signal with

a shorting link

VCTL

4

Power and Gain Control

Connect to 3.3 V (VCC) for maximum gain

and power output. For power control

connect to a variable voltage source between

0 V and 3.3 V.

GND

5

Ground

Provided as a ground connection for the

VCTL signal.

VCC

6

Supply Voltage

Use this VCC to connect to VRAMP signal

with a shorting link

VRAMP

7

PA Enable Pin

0 V – 1.5 V applied = Device Disabled

2 V – VCC applied = Device Enabled

GND

8

Ground

Provided as a ground connection for the

VRAMP signal

Table 1: Power and Analog I/O Header (JP3)

Note: It is recommended to use proper engineering connection practices by making RF and digital connections prior

to turning on the power supply.