AP622 WJ Communications, Inc., AP622 Datasheet - Page 2

• Manufacturer Part Number: AP622
• Description: Umts-band 4w Hbt Amplifier Module
• Manufacturer: WJ Communications, Inc.

WJ Communications, Inc • Phone 1-800-WJ1-4401 • FAX: [phone] • e-mail: [e-mail] • Web site: www.wj.com, www.TriQuint.com
The following bias procedure is recommended to ensure proper functionality of AP622 in a laboratory environment. The sequencing is not
required in the final system application.
Turn-on Sequence:
Turn-off Sequence:
Notes:
1.
2.
3.
4.
1.
2.
3.
1.
Attach input and output loads onto the evaluation board.
Turn on power supply Vcc = +28V.
Turn on power supply Vpd = +5V.
Turn on RF power.
Turn off RF power.
Turn off power supply Vpd = +5V.
Turn off power supply Vcc = +28V.
Vpd is used as a reference for the internal active bias circuitry. It can be used to turn on/off the amplifier.
AP622
UMTS-band 4W HBT Amplifier Module
Evaluation Board Bias Procedure
28V
5V
GND
28V
Specifications and information are subject to change without notice
Page 2 of 4 March 2007