2-8

Typical Application Diagram

For additional information on the PRISM™ chip set, call

(407) 724-7800 to access Intersil’ AnswerFAX system. When

prompted, key in the four-digit document number (File #) of

the datasheets you wish to receive.

The four-digit file numbers are shown in Typical Application

Diagram, and correspond to the appropriate circuit.

FIGURE 1. TYPICAL TRANSCEIVER AMPLIFIER APPLICATIONS CIRCUIT USING THE HFA3424

NOTE:

Required for systems targeting 802.11 specifications.

QUAD IF MODULATOR

RFPA

HFA3925

HFA3724

DSSS BASEBAND PROCESSOR

HSP3824

TUNE/SELECT

HFA3524

VCO

A/D

A/D

MAC-PHY

INTERFACE

802.11

VCO

DUAL SYNTHESIZER

HFA3624

UP/DOWN

CONVERTER

A/D

(FILE# 4067)

(FILE# 4064)

(FILE# 4062)

(FILE# 4066)

(FILE# 4132)

PRISM™ CHIP SET FILE #4063

M

U

X

M

U

X

DPSK

DEMOD

DPSK

MOD.

DE-

SPREAD

SPREAD

Q

I

(FILE# 4131)

CCA

RXI

RXQ

RSSI

TXI

TXQ

HFA3424