Document
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 filtering 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 output 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
4 5
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. Package Warpage: 0.05 max. Die thickness allowable: 0.305 mm max.
Optimum Technology Matching® Applied
Package Style: LCC, 16-Pin, 4x4
üSi 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 IP3: -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
RF2494
Absolute Maximum Ratings Parameter
Supply Voltage Input LO and RF Levels Operating Ambient Temperature Storage Temperature
Preliminary
Rating
-0.5 to 3.6 +6 -40 to +85 -40 to +150
Unit
VDC dBm °C °C Caution! ESD sensitive device.
RF Micro Devices believes the furnished information is correct and accurate at the time of this printing. However, RF Micro Devices reserves the right to make changes to its products without notice. RF Micro Devices does not assume responsibility for the use of the described product(s).
Parameter
Overall
RF Frequency Range IF Frequency Range Cascade Gain Cascade IP3 Cascade Noise Figure Input P1dB
Specification Min. Typ. Max.
2400 to 2500 374 28 15 -22 -8 4.5 18 -28 -14 2.3 7 2:1 -3 -3 10 -6 22 50 10 50 -17 18 4 -15 -10 42 15 0
Unit
Condition
T = 25°C, VCC =.