2-1

TM

File Number

4288.1

CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.

1-888-INTERSIL or 321-724-7143

PRISM® is a registered trademark of Intersil Corporation. PRISM logo is a trademark of Intersil Corporation.

HFA3421

1.7GHz - 2.3GHz Low Noise Amplifier

The Intersil HFA3421 PRISM® is a high

performance low noise amplifier in a

low cost SOIC 8 lead surface mount

plastic package. The HFA3421 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 HFA3421 is ideally suited for use where low noise

figure, high gain, high dynamic range and low power

consumption are required. Typical applications include

receiver front ends in the Wireless Local Loop (WLL)

systems, as well as standard gain blocks, buffer amps, driver

amps and IF amps in both fixed and portable systems.

Pinout

HFA3421

(SOIC)

TOP VIEW

Features

• Low Noise Figure . . . . . . . . . . . . . . . . . . . . . . . . . . 1.65dB

• High Gain . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .20dB

• Low Power Consumption . . . . . . . . . . . . . . 3V to 5V, 8mA

• High Dynamic Range

• DC Decoupled RF Input and Output

• No External RF Tuning Elements Necessary

• Low Cost SOIC 8 Lead Plastic Package

Applications

• Wireless Local Loop

• TDD Quadrature-Modulated Communication Systems

• Wireless Local Area Networks

• PCMCIA Wireless Transceivers

• TDMA Packet Protocol Radio

• PCS/Wireless PBX

Functional Block Diagram

Ordering Information

PART NUMBER

TEMP.

PACKAGE

PKG.

NO.

HFA3421IB

-40 to 85

8 Ld SOIC

M8.15

HFA3421IB96

-40 to 85

Tape and Reel

GND

RF IN

GND

1

2

3

4

8

7

6

5

GND

RF OUT

GND

RF IN

LNA 1

RF OUT

EXTENDED

BIAS

Data Sheet

September 1997