RF2418
8
Typical Applications
• UHF Digital and Analog Receivers
• Digital Communication Systems
• Commercial and Consumer Systems
• 433MHz and 915MHz ISM Band Receivers
LOW CURRENT LNA/MIXER
• Spread-Spectrum Communication Systems • General Purpose Frequency Conversion
Product Description
The RF2418 is a monolithic integrated UHF receiver
front-end. The IC contains 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 50Ω 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 imped-
ances. The output of the LNA is made available as an
output to permit the insertion 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.
0.156
0.148
.018
.014
0.010
0.004
0.347
0.339
0.050
0.252
0.236
0.059
0.057
8° MAX
0° MIN
8
0.010
0.007
0.0500
0.0164
Optimum Technology Matching® Applied
Si BJT
Si Bi-CMOS
GaAs HBT
SiGe HBT
Si CMOS
ü
GaAs MESFET
Package Style: SOIC-14
Features
• Single 3V to 6.5V Power Supply
• High Dynamic Range
LNA
LNA IN 1
GND 2
VDD1 3
VDD2 4
10pF
IF BYP 5
IF2 OUT 6
IF1 OUT 7
10 GND
9 DEC
MIXER
8 LO IN
14 LNA OUT
• Low Current Drain
13 GND
12 GND
11 RF IN
• High LO Isolation
• LNA Power Down Mode for Large Signals
RF AMP
BUFFER
Ordering Information
RF2418
RF2418 PCBA
Low Current LNA/Mixer
Fully Assembled Evaluation Board
Functional Block Diagram
RF Micro Devices, Inc.
7628 Thorndike Road
Greensboro, NC 27409, USA
Tel (336) 664 1233
Fax (336) 664 0454
http://www.rfmd.com
Rev A6 010717
8-35
FRONT-ENDS
RFMD [ RF MICRO DEVICES ]
