Specifications and information are subject to change without notice

TriQuint Semiconductor, Inc

• Phone 1-800-951-4401 • FAX: 408-577-6633 • e-mail: info-sales@tqs.com • Web site: www.TriQuint.com

Page 2 of 15 May 2009

AP561

0.7-2.9 GHz WiMAX 8W Power Amplifier

Application Circuit PC Board Layout

Circuit Board Material: 0.0147” Rogers Ultralam 2000, single layer, 1 oz

copper,

Baseplate Configuration

Notes:

1.

Please note that for reliable operation, the evaluation board will have to be mounted to a much

larger heat sink during operation and in laboratory environments to dissipate the power

consumed by the device. The use of a convection fan is also recommended in laboratory

environments.

2.

The area around the module underneath the PCB should not contain any soldermask in order to

maintain good RF grounding.

3.

For proper and safe operation in the laboratory, the power-on sequencing is recommended.

Evaluation Board Bias Procedure

Following bias procedure is recommended to ensure proper functionality of AP561 in a laboratory environment. The sequencing is not

required in the final system application.

Bias.

Voltage (V)

Vcc

+12

Vpd

+5

Turn-on Sequence:

1.

Attach input and output loads onto the evaluation board.

2.

Turn on power supply Vcc = +12V.

3.

Turn on power supply Vpd = +5V.

4.

Turn on RF power.

Turn-off Sequence:

1.

Turn off RF power.

2.

Turn off power supply Vpd = +5V.

3.

Turn off power supply Vcc = +12V.