RF2418
8
Typical Applications
鈥?UHF Digital and Analog Receivers
鈥?Digital Communication Systems
鈥?Commercial and Consumer Systems
鈥?433MHz and 915MHz ISM Band Receivers
LOW CURRENT LNA/MIXER
鈥?Spread-Spectrum Communication Systems 鈥?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 50鈩?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擄 MAX
0擄 MIN
8
0.010
0.007
0.0500
0.0164
Optimum Technology Matching廬 Applied
Si BJT
Si Bi-CMOS
GaAs HBT
SiGe HBT
Si CMOS
眉
GaAs MESFET
Package Style: SOIC-14
Features
鈥?Single 3V to 6.5V Power Supply
鈥?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
鈥?Low Current Drain
13 GND
12 GND
11 RF IN
鈥?High LO Isolation
鈥?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