The information provided herein is believed to be reliable at press time. Sirenza Microdevices assumes no responsibility for ina ccuracies 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-103585 Rev H

Sirenza Microdevices’ SZA-5044 is a high efficiency class AB

Heterojunction Bipolar Transistor (HBT) amplifier housed in a

low-cost surface-mountable plastic package. This HBT ampli-

fier is made with InGaP on GaAs device technology and fabri-

cated with MOCVD for an ideal combination of low cost and

high reliability. This product is specifically designed as a final

or driver stage for 802.11a equipment in the 4.9 - 5.9 GHz

band for a 5V supply. Optimized on-chip impedance matching

circuitry provides a 50

Ω nominal RF input impedance. A sin-

gle external output matching circuit covers the entire 4.9-

5.9GHz band simultaneously. The external output match

allows for load line optimization for other applications or opti-

mized performance over narrower bands. This product is

available in a RoHS Compliant and Green package with matte

tin finish, designated by the “Z” package suffix.

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 – 5.15 GHz

dBm

30.2

Output Power at 1dB Compression – 5.875 GHz

27.5

29

Gain at 4.9 GHz

dB

30.7

32.7

34.7

Gain at 5.15 GHz

dB

33.0

Gain at 5.875 GHz

dB

25.7

27.7

29.7

Pout

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

dBm

21

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

22

NF

Noise Figure at 5.875 GHz

dB

6.3

IM3

Third Order Intermod at 18dBm per tone - 5.875GHz

dBc

-39

-35

IRL

Worst Case Input Return Loss 4.9-5.875GHz

dB

8.6

11.6

ORL

Worst Case Output Return Loss 4.9-5.875GHz

9.3

12.3

Vdet Range

Output Voltage Range for Pout=10dBm to 26dBm

V

0.8 to 1.9

Icq

Vcc Quiescent Current

mA

230

270

310

mA

1.7

Off Vcc Leakage Current Vpc=0V

uA

8

100

Thermal Resistance (junction - lead)

ºC/W

24

Functional Block Diagram

SZA-5044

SZA-5044Z

4.9 – 5.9 GHz 5V Power Amplifier

Product Features

Applications

Pout = 22dBm @ 3% EVM, 5V, 343mA

µs, Vpc 2.9V to 5V

Product Description

4mm x 4mm QFN Package

RFIN

RFOUT

Vcc

Power Detector

Vout

Active

Bias

Active

Bias

Active

Bias

Power

Up/Down

Control

Pb

RoHS Compliant

&

Package

Green