The Intersil 2.4GHz PRISM? chip set is a highly integrated six-chip solution for RF modems employing Direct Sequence Spread Spectrum (DSSS) signaling. Significant integration of transmit and receive functions employ the following ICs: complete integrated DSSS engine, the HFA3824; a quadrature modulator/demodulator, integrated with an IF limiter amplifier with RSSI, the HFA3724, HFA3726; a combined LNA/Mixer and upconverter/preamplifier, the HFA3624; a high performance, low noise amplifier for increased receiver sensitivity, the HFA3424; a dual synthesizer, the HFA3524 and a monolithic RF power amplifier, the HFA3925. Each of the functions may be used individually or in any combination in support of a variety of RF modem applications.

特性 Features

? Provides Antenna-to-Bits? Data Stream

? Low Voltage Operation from 2.7V to 5.5V

? 2.4GHz - 2.5GHz ISM Band Operation

? Single Heterodyne Conversion

? Programmable Antialiasing and Shaping Filters

? 10MHz to 400MHz IF Operation with RSSI

? Autonomous Half Duplex Direct Sequence Modem

? Selectable DBPSK, DQPSK Signalling

? Antenna Diversity Selection

? Direct Sequence Physical Layer (DS-PHY)

? Differential Data Encoding/Decoding

? Programmable 16-Bit PN Code

? Data Rates up to 4 MBPS DQPSK

? Power Management Control

? Low Profile PCMCIA-Compatible Surface Mount Packaging

Applications

? Systems Targeting IEEE 802.11 Standard

? PCMCIA Wireless Transceiver

? WLAN RF Modems

? TDMA Packet Protocol Radios

? Part 15 Compliant Radio Links