Preliminary
8
Typical Applications
• Part of 2.4GHz IEEE802.11b WLANs
• Digital Communication Systems
RF2494
HIGH FREQUENCY LNA/MIXER
• WLAN or Wireless Local Loop
• Portable Battery-Powered Equipment
• Spread-Spectrum Communication Systems • UHF Digital and Analog Receivers
Product Description
The RF2494 is a monolithic integrated UHF receiver front
end suitable for 2.4GHz ISM band applications. The IC
contains all of the required components to implement the
RF functions of the receiver except for the passive filter-
ing and LO generation. It contains an LNA (low-noise
amplifier), a second RF amplifier and a doubly balanced
mixer. The output of the LNA is made available as an out-
put to permit the insertion of a bandpass filter between
the LNA and the RF/Mixer section. The mixer outputs can
be selectively disabled to allow for the IF filter to be used
in the transmit mode.
.80
.65
1.00
0.85
.60
.24 typ
4.00
sq.
.65
.30
4 PLCS
2
.35
.23
1.85
1.55 sq.
12°
max
.05
.01
.75
.50
.65
.23
.13
4 PLCS
Dimensions in mm.
NOTES:
1
2
Shaded Pin is Lead 1.
Dimension applies to plated terminal and is measured between 0.02 mm and
0.25 mm from terminal end.
8
FRONT-ENDS
3 Pin 1 identifier must exist on top surface of package by identification mark or
feature on the package body. Exact shape and size is optional.
4 Package Warpage: 0.05 max.
5 Die thickness allowable: 0.305 mm max.
Optimum Technology Matching® Applied
Package Style: LCC, 16-Pin, 4x4
ü
Si Bi-CMOS
Si BJT
GaAs HBT
SiGe HBT
GaAs MESFET
Si CMOS
Features
• Single 2.7V to 3.6V Power Supply
• 2400MHz to 2500MHz Operation
• Two Gain Settings: 28dB or 12dB
• 4.5dB Cascaded NF, High Gain Mode
• 20mA DC Current Consumption
• Input IP
3
: -23dBm or -8dBm
16
PD 1
VCC1 2
VCC2 3
MIX OUT- 4
5
MIX OUT+
Bias
Circuits
15
GS
14
13
12 NC
LNA
LNA OUT
11 NC
10 MIX IN
9
GND3
LNA IN
VCC4
RF AMP
6
LO IN
7
RX EN
8
VCC3
Ordering Information
RF2494
High Frequency LNA/Mixer
RF2494 PCBA-H Fully Assembled Evaluation Board (2.5GHz)
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 A0 010730
8-53
RFMD [ RF MICRO DEVICES ]
