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Optimum Technology Matching® Applied
GaAs HBT
InGaP HBT
GaAs MESFET
SiGe BiCMOS
Si BiCMOS
SiGe HBT
GaAs pHEMT
Si CMOS
Si BJT
GaN HEMT
Functional Block Diagram
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.
Product Description
7628 Thorndike Road, Greensboro, NC 27409-9421 · For sales or technical
support, contact RFMD at (+1) 336-678-5570 or sales-support@rfmd.com.
Ordering Information
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LNA IN
GND
VDD1
VDD2
IF BYP
IF2 OUT
IF1 OUT
LNA OUT
GND
GND
RF IN
GND
DEC
LO IN
LNA
MIXER
BUFFER
10pF
RF AMP
RF2418
LOW CURRENT LNA/MIXER
The RF2418 is a monolithic integrated UHF receiver front-end. The IC con-
tains all of the required components to implement the RF functions of the
receiver except for the passive filtering and LO generation. It contains an
LNA (low-noise amplifier), a second RF amplifier, a dual-gate GaAs FET
mixer, and an IF output buffer amplifier which will drive a 50
Ω load. In
addition, the IF buffer amplifier may be disabled and a high impedance
output is provided for easy matching to IF filters with high impedances.
The output of the LNA is made available as an output to permit the inser-
tion of a bandpass filter between the LNA and the RF/Mixer section. The
LNA section may be disabled by removing the VDD1 connection to the IC.
Features
Single 3V to 6.5V Power Sup-
ply
High Dynamic Range
Low Current Drain
High LO Isolation
LNA Power Down Mode for
Large Signals
Applications
UHF Digital and Analog
Receivers
Digital Communication Sys-
tems
Spread-Spectrum Communi-
cation Systems
Commercial and Consumer
Systems
433MHz and 915MHz ISM
Band Receivers
General Purpose Frequency
Conversion
RF2418
Low Current LNA/Mixer
RF2418PCBA-41X
Fully Assembled Evaluation Board
Rev A7 DS060203
RoHS Compliant & Pb-Free Product
Package Style: SOIC-14
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