RF5122
3V TO 4.5V, 2.4GHz TO 2.5GHz
LINEAR POWER AMPLIFIER
RoHS Compliant & Pb-Free Product
Package Style: QFN, 8-Pin, 2.2mmx2.2mmx0.6mm
VCC
Features
Single Power Supply 3.0V to
3.6V
24dB Minimum Gain
Input and Output Matched to
50Ω
2400MHz to 2500MHz Fre-
quency Range
+18dBm @ <2.5% typ EVM,
120mA @ 3.3V
CC
RF IN 1
Input
Match
8
VC1
7
6 VC2
Interstage
Match
Output
Match
VREG 2
Bias Circuit
Power
Detector
5 RF OUT
3
PDETECT
4
N/C
Applications
IEEE802.11b/g/n WLAN
Applications
2.5GHz ISM Band Applica-
tions
Commercial and Consumer
Systems
Portable Battery-Powered
Equipment
Spread-Spectrum and MMDS
Systems
Functional Block Diagram
Product Description
The RF5122 is a linear, medium-power, high-efficiency, two-stage amplifier IC
designed specifically for battery-powered WLAN applications such as PC cards, mini
PCI, and compact flash applications. The device is manufactured on an advanced
InGaP Gallium Arsenide Heterojunction Bipolar Transistor (HBT) process, and has
been designed for use as the final RF amplifier in 2.5GHz OFDM and other spread-
spectrum transmitters. The device is provided in a 2.2mmx2.2mm, 8-pin, QFN with
a backside ground. The RF5122 is designed to maintain linearity over a wide range
of supply voltages and power outputs. The RF5122 also has built-in power detector
and incorporates the input, interstage, and output matching components internally
which reduces the component count used externally and makes it easier to incorpo-
rate on any design.
Ordering Information
RF5122
RF5122PCBA-41X
3V to 4.5V, 2.4GHz to 2.5GHz Linear Power Amplifier
Fully Assembled Evaluation Board
Optimum Technology Matching® Applied
GaAs HBT
GaAs MESFET
InGaP HBT
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
RF MICRO DEVICES®, RFMD®, Optimum Technology Matching®, Enabling Wireless Connectivity™, PowerStar®, POLARIS™ TOTAL RADIO™ and UltimateBlue™ are trademarks of RFMD, LLC. BLUETOOTH is a trade-
mark owned by Bluetooth SIG, Inc., U.S.A. and licensed for use by RFMD. All other trade names, trademarks and registered trademarks are the property of their respective owners. ©2006, RF Micro Devices, Inc.
Rev A5 DS070517
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
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