PRELIMINARY DATA SHEET • SE2605L: HIGH POWER (+26 dBm) 802.11n WLAN PA

Skyworks Solutions, Inc. • Phone [781] 376-3000 • Fax [781] 376-3100 • sales@skyworksinc.com • www.skyworksinc.com

203009E • Skyworks Proprietary Information • Products and Product Information are Subject to Change Without Notice • February 10, 2016

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Evaluation Board Description

The SE2605L Evaluation Board is used to test the performance of

the SE2605L WLAN PA. A schematic diagram of the SE2605L

Evaluation Board is shown in Figure 3. A photograph of the

Evaluation Board is shown in Figure 4. Component values for the

SE2605L Evaluation Board are listed in Table 7.

Circuit Design Considerations

The following design considerations are general in nature and

must be followed regardless of final use or configuration:

 Paths to ground should be made as short as possible.

 The ground pad of the SE2605L has special electrical and

thermal grounding requirements. This pad is the main thermal

conduit for heat dissipation. Since the circuit board acts as the

heat sink, it must shunt as much heat as possible from the

device.

 Therefore, design the connection to the ground pad to dissipate

the maximum wattage produced by the circuit board. Multiple

vias to the grounding layer are required. For further information,

refer to the Skyworks Application Note PCB Design Guidelines

for High Power Dissipation Packages, document number

201211.

 Bypass capacitors should be used on the DC supply lines. Refer

to the schematic drawing in Figure 3 for further details.

 The RF lines should be well separated from each other with

solid ground in between traces to maximize input-to-output

isolation.

NOTE: A poor connection between the slug and ground increases

device.

Evaluation Board Setup Procedure

1. Connect system ground to pin 1 of connector J5.

2. Apply 5.0 V to pins 3 and 4 of connector J5.

3. By applying 3.3 V on PA_EN (pin 1 of the J4 header), the PA is

enabled. By placing a ground on PA_EN, the PA is disabled and

placed in a shutdown state, drawing minimal current.

4. The 2 GHz amplifier performance can be monitored by applying

an RF signal to connector J1 (RF_IN). Monitor the output power

on the RF_OUT port connector, J1.

Detector performance can be monitored on pin 4 of connector J4.

CAUTION: Do not overdrive the amplifier by applying too much

RF on the device input. A suitable starting input power

setting is –20 dBm.