The information provided herein is believed to be reliable at press time. Sirenza Microdevices assumes no responsibility for inaccuracies or ommisions.

Sirenza Microdevices assumes no responsibility for the use of this information, and all such information shall be entirely at the user’s own risk. Prices and specifications are subject to change without

notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. Sirenza Microdevices does not authorize or warrant any Sirenza Microdevices product

for use in life-support devices and/or systems.

Copyright 2002 Sirenza Microdevices, Inc. All worldwide rights reserved.

303 South Technology Court Broomfield, CO 80021

Phone: (800) SMI-MMIC

http://www.sirenza.com

1

EDS-103643 Rev B

Preliminary

Sirenza Microdevices’ STA-6033 is a high efficiency class

AB Heterojunction Bipolar Transistor (HBT) amplifier

housed in a low-cost surface-mountable plastic package.

This HBT amplifier is made with InGaP on GaAs device

technology and fabricated with MOCVD for an ideal com-

bination of low cost and high reliability.

This product is specifically designed as a final stage for

802.11a equipment in the 4.9 - 5.9 GHz band. It can run

from a 3.0V to 3.6V supply. Optimized on-chip impedance

matching circuitry provides a 50

Ω nominal RF input imped-

ance. A single external output matching circuit covers the

entire 4.9-5.9GHz band. The external output match allows

for load line optimization for other applications or opti-

mized performance over narrower bands. It is designed as

a drop in replacement for similar parts in its class.

Key Specifications

Symbol

Parameters: Test Conditions, App circuit page 4

Unit

Min.

Typ.

Max.

Frequency of Operation

MHz

4900

5900

Output Power at 1dB Compression – 4.9 GHz

dBm

26.5

Output Power at 1dB Compression – 5.875 GHz

24.0

25.5

Gain at 4.9 GHz

dB

28.0

30.0

32.0

Gain at 5.875 GHz

23.6

25.6

27.6

Pout

Output power at 3% EVM 802.11a 54Mb/s - 5.15GHz

dBm

18

Output Power at 3% EVM 802.11a 54Mb/s - 5.875GHz

18

IM3

Third Order Intermod at Pout=15dBm per tone - 5.875GHz

dBc

-38

-34

NF

Noise Figure at 5.875 GHz

dB

5.7

IRL

Worst Case Input Return Loss 4.9-5.875GHz

dB

11

15

ORL

Worst Case Output Return Loss 4.9-5.875GHz

8

12

Vdet Range

Output Voltage Range for Pout=7dBm to 23dBm

V

0.8 to 1.5

Icq

Vcc Quiescent Current

mA

140

165

190

1.5

Thermal Resistance (junction - lead)

ºC/W

28

Functional Block Diagram

STA-6033

4.9 – 5.9 GHz 3.3V Power Amplifier

Product Features

Applications

Pout = 18dBm @ 3% EVM, 3.3V, 210mA

Product Description

RFIN

RFOUT

Vcc

Pow er Detector

Vout

Activ e

Bias

Activ e

Bias

Activ e

Bias

Pow er

Up/Dow n

Control

16 pin 3mm x 3mm QFN