DataSheet.es    


PDF RF5122 Data sheet ( Hoja de datos )

Número de pieza RF5122
Descripción LINEAR POWER AMPLIFIER
Fabricantes RF Micro Devices 
Logotipo RF Micro Devices Logotipo



Hay una vista previa y un enlace de descarga de RF5122 (archivo pdf) en la parte inferior de esta página.


Total 12 Páginas

No Preview Available ! RF5122 Hoja de datos, Descripción, Manual

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

1 page




RF5122 pdf
RF5122
Theory of Operation and Application Information
The RF5122 is a two-stage power amplifier (PA) with a minimum gain of 24dB minimum gain in the 2.4GHz to 2.5GHz ISM
band. The RF5122 has integrated input, interstage and output matching components thus allowing minimal bill of material
(BOM) parts count in end applications. The RF5122 is designed primarily for IEEE802.11b/g/n WLAN applications where the
available supply voltage and current are limited. This amplifier will operate to (and below) the lowest expected voltage made
available by a typical PCMCIA slot in a laptop PC, and will maintain required linearity at decreased supply voltages.
The RF5122 requires only a single positive supply of 3.3V nominal (or greater) to operate to full specifications. Power control is
provided through one bias control input pin (VREG). DC blocking caps are provided internally and the evaluation board circuit
(available from RF Micro Devices, Inc. (RFMD)) is optimized for 3.3VDC applications.
For best results, the PA circuit layout from the evaluation board should be copied as closely as possible, particularly the ground
layout and ground vias. Pin 4 must be left as a no-connect on the PCB in order for the PA to work properly. Other configurations
may also work, but the design process is much easier and quicker if the layout is copied from the RF5122 evaluation board.
Gerber files of RFMD PCBA designs can be provided on request. The RF5122 is a very easy part to implement, but care in cir-
cuit layout and component selection is always advisable when designing circuits to operate at 2.5GHz. The RF5122 evaluation
board layout and schematic are available using 0201 (US) size components which will help shrink the overall size of the total
area of the PA and components of the intended design. Please contact RFMD Sales or Application Engineering for additional
data and guidance.
For best performance, it is important to duplicate (as closely as possible) the layout of the evaluation board. The RF5122 has
primarily been characterized with a voltage on VREG of 2.8VDC. If you prefer to use a control voltage that is significantly differ-
ent than 2.8VDC, or a different frequency than the recommended frequency range, contact RFMD Sales or Applications Engi-
neering for additional data and guidance.
QFN8 Package Area versus Other Small Form Factor Package Areas
Package Type Length (mm) Width (mm) Area (mm2) Delta (Δ) (mm2) to QFN8
SOT 23-6
3.1
3.0 9.30
4.46
QFN12 3.0 3.0 9.00
4.16
SOT 23-5
2.9
2.8 8.12
3.28
QFN8
2.2 2.2 4.84
0.00
An application schematic for 2.5GHz operation is included that has two additional components, one shunt inductor, and one
shunt capacitor, on the output for improved second harmonic rejection. This layout provides ~20dB rejecetion at 5GHz with a
minimal BOM count.
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].
5 of 12

5 Page





RF5122 arduino
RF5122
PCB Solder Mask Pattern
Liquid Photo-Imageable (LPI) solder mask is recommended. The solder mask footprint will match what is shown for the PCB
metal land pattern with a 2mil to 3mil expansion to accommodate solder mask registration clearance around all pads. The
center-grounding pad shall also have a solder mask clearance. Expansion of the pads to create solder mask clearance can be
provided in the master data or requested from the PCB fabrication supplier.
A = 0.57 x 0.41 Typ.
B = 0.41 x 0.57 Typ.
C = 1.20 Sq.
0.65
Typ.
Pin 8
Dimensions in mm.
BB
Pin 1
Pin 6
AA
0.32 Typ.
C 0.65 Typ.
AA
0.68 Typ.
BB
0.68
Typ.
Pin 4
0.32 Typ.
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].
11 of 12

11 Page







PáginasTotal 12 Páginas
PDF Descargar[ Datasheet RF5122.PDF ]




Hoja de datos destacado

Número de piezaDescripciónFabricantes
RF5122LINEAR POWER AMPLIFIERRF Micro Devices
RF Micro Devices
RF5125LINEAR POWER AMPLIFIERRF Micro Devices
RF Micro Devices

Número de piezaDescripciónFabricantes
SLA6805M

High Voltage 3 phase Motor Driver IC.

Sanken
Sanken
SDC1742

12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters.

Analog Devices
Analog Devices


DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares,
permitiéndote verlos en linea o descargarlos en PDF.


DataSheet.es    |   2020   |  Privacy Policy  |  Contacto  |  Buscar