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RF5122 Schematic ( PDF Datasheet ) - RF Micro Devices

Teilenummer RF5122
Beschreibung LINEAR POWER AMPLIFIER
Hersteller RF Micro Devices
Logo RF Micro Devices Logo 




Gesamt 12 Seiten
RF5122 Datasheet, Funktion
www.DataSheet4U.com
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
Features
„ Single Power Supply 3.0V to
3.6 V
„ 24dB Minimum Gain
„ Input and Output Matched to
50 Ω
„ 2400MHz to 2500MHz Fre-
quency Range
„ +18dBm @ <2.5% typ EVM,
120mA @ 3.3VCC
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
8
RF IN 1
Input
Match
7
Interstage
Match
Output
Match
6 VC2
VREG 2
Bias Circuit
Power
Detector
5 RF OUT
34
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
3V to 4.5V, 2.4GHz to 2.5GHz Linear Power Amplifier
RF5122PCBA-41X Fully Assembled Evaluation Board
Optimum Technology Matching® Applied
GaAs HBT
9GaAs 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 [email protected].
1 of 12






RF5122 Datasheet, Funktion
RF5122
RF IN
VREG
Application Schematic
for Improved Second Harmonic Performance
VCC 1 μF
1 nF
27 nH
VCC 1 μF
87
1
Input
Match
2
3
Interstage
Match
Output
Match
6
Bias Circuit
Power
Detector
5
4**
1.2 nH*
10 pF
2.2 pF*
RF OUT
330 pF
PDETECT
* The 2.2 pF cap can be placed at the same point as the 1.2 nH inductor
which should be as close as possible to the DC blocking cap (10 pF) the
placement can be modified for the best linear performance. A series
capacitor (10 pF) must be added to provide a DC block after the 2F0 Filter.
**Pin 4 must be left as a no-connect on the PCB.
6 of 12
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
Rev A5 DS070517

6 Page









RF5122 pdf, datenblatt
RF5122
RoHS* Banned Material Content
RoHS Compliant:
Pack age total weight in grams (g):
Compliance Date Code:
B ill of Materials Revision:
Pb Free Category:
Yes
0.008
N/A
-
e3
B ill of M aterials
Die
Molding Compound
Lead Frame
Die Attach Epoxy
Wire
Solder Plating
Pb
0
0
0
0
0
0
Parts Per M illion (PPM)
Cd
Hg
Cr VI
PBB
0000
0000
0000
0000
0000
0000
PB
This RoHS banned material content declaration was prepared solely on information, including ana
data, provided to RF M D by its suppliers, and applies to the B ill of M aterials (B OM ) revision no
* DIRECTIVE 2002/95/EC OF THE EU ROPEAN PARLIAMENT AND OF THE COUNCIL of 27 January 2003 on the restriction o
use of certain hazardous substances in electrical and electronic equipment
12 of 12
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or [email protected].
Rev A5 DS070517

12 Page





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