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PDF HFA3424IB96 Data sheet ( Hoja de datos )
| Número de pieza | HFA3424IB96 | |
| Descripción | 2.4GHz - 2.5GHz Low Noise Amplifier | |
| Fabricantes | Intersil Corporation | |
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Data Sheet
HFA3424
January 1997 File Number 4131.2
2.4GHz - 2.5GHz Low Noise Amplifier
™ The Intersil 2.4GHz PRISM™ chip set is
a highly integrated five-chip solution for
RF modems employing Direct
Sequence Spread Spectrum (DSSS)
signaling. The HFA3424 2.4GHz -
2.5GHz low noise amplifier is an optional chip that can be
added to the five chips in the PRISM™ chip set. The
HFA3424 offers increased sensitivity for systems targeting
802.11 specifications. (See Figure 1, the Typical Application
Diagram.)
The Intersil HFA3424 PRISM™ is a high performance low
noise amplifier in a low cost SOIC 8 lead surface mount
plastic package. The HFA3424 employs a fully monolithic
design which eliminates the need for external tuning
networks. It can be biased using 3V or 5V supplies and has
an option for biasing at higher currents for increased
dynamic range.
The HFA3424 is ideally suited for use where low noise
figure, high gain, high dynamic range and low power
consumption required. Typical applications include receiver
front ends in the Wireless Local Area Network (WLAN) and
wireless data collection markets in the 2.4GHz Industrial,
Scientific and Medical (ISM) band, as well as standard gain
blocks, buffer amps, driver amps and IF amps in both fixed
and portable systems.
Pinout
HFA3424
(SOIC)
TOP VIEW
GND 1
VBIAS 2
RF IN 3
GND 4
8 GND
7 VDD
6 RF OUT
5 GND
Features
• Low Noise Figure . . . . . . . . . . . . . . . . . . . . . . . . . . 1.90dB
• High Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .14dB
• Low Power Consumption . . . . . . . . . . . . . . 3V to 5V, 5mA
• High Dynamic Range
• DC Decoupled RF Input and Output
• No External RF Tuning Elements Necessary
• Low Cost SOIC 8 Lead Plastic Package
Applications
• Systems Targeting IEEE 802.11 Standard
• TDD Quadrature-Modulated Communication
Systems
• Wireless Local Area Networks
• PCMCIA Wireless Transceivers
• ISM Systems
• TDMA Packet Protocol Radios
• PCS/Wireless PBX
• Wireless Local Loop
Ordering Information
TEMP.
PART NUMBER RANGE (oC)
PACKAGE
HFA3424IB
HFA3424IB96
-40 to 85
-40 to 85
8 Ld SOIC
Tape and Reel
PKG.
NO.
M8.15
Functional Block Diagram
VDD
RF OUT
LNA 1
EXTENDED RF IN
BIAS
2-7 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207 | Copyright © Intersil Corporation 1999
PRISM® is a registered trademark of Intersil Corporation. PRISM logo is a trademark of Intersil Corporation.
1 page  
Typical Application Circuit
VBIAS (PIN 2)
NORMAL BIAS
EXTENDED BIAS
Open
30Ω To 35Ω To Ground
HFA3424
500pF
15nH
+VDD
RF SIGNAL OUTPUT 2.4GHz
(50Ω TRANSMISSION LINE)
SEE NOTE 2
PIN 2 ALLOWS FOR AN EXTERNAL RESISTOR
RBB TO BE USED TO GROUND FOR AN OPTIONAL
20mA CURRENT OPERATION. RECOMMENDED
VALUES FOR THE CHIP RESISTOR ARE 30Ω TO 35Ω.
RBB
NOTE:
RF SIGNAL INPUT 2.4GHz
(50Ω TRANSMISSION LINE)
SEE NOTE 2
3. No DC blocking capacitor required on LNA input or output transmission lines.
FIGURE 8. REFERENCE APPLICATION/TEST DESIGN SETUP SCHEMATIC: LOW NOISE AMPLIFIER
All Intersil semiconductor products are manufactured, assembled and tested under ISO9000 quality systems certification.
Intersil semiconductor products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design and/or specifications at any time with-
out notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see web site http://www.intersil.com
Sales Office Headquarters
NORTH AMERICA
Intersil Corporation
P. O. Box 883, Mail Stop 53-204
Melbourne, FL 32902
TEL: (407) 724-7000
FAX: (407) 724-7240
EUROPE
Intersil SA
Mercure Center
100, Rue de la Fusee
1130 Brussels, Belgium
TEL: (32) 2.724.2111
FAX: (32) 2.724.22.05
ASIA
Intersil (Taiwan) Ltd.
7F-6, No. 101 Fu Hsing North Road
Taipei, Taiwan
Republic of China
TEL: (886) 2 2716 9310
FAX: (886) 2 2715 3029
2-11
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