8-35
8
Product Description
Ordering Information
Typical Applications
Features
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
Optimum Technology Matching® Applied
Si BJT
GaAs MESFET
GaAs HBT
Si Bi-CMOS
ü
SiGe HBT
Si CMOS
1
2
3
4
5
6
7
14
13
12
11
10
9
8
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
• UHF Digital and Analog Receivers
• Digital Communication Systems
• Spread-Spectrum Communication Systems
• Commercial and Consumer Systems
• 433MHz and 915MHz ISM Band Receivers
• General Purpose Frequency Conversion
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 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 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.
• Single 3V to 6.5V Power Supply
• High Dynamic Range
• Low Current Drain
• High LO Isolation
• LNA Power Down Mode for Large Signals
RF2418
Low Current LNA/Mixer
RF2418 PCBA
Fully Assembled Evaluation Board
8
Rev A6 010717
0.156
0.148
0.059
0.057
0.252
0.236
0.010
0.004
.018
.014
8° MAX
0° MIN
0.0500
0.0164
0.010
0.007
0.347
0.339
0.050
Package Style: SOIC-14
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