HFA3824A中文資料Intersil數(shù)據(jù)手冊PDF規(guī)格書

The Intersil HFA3824A Direct Sequence (DSSS) baseband processor is part of the PRISM? 2.4GHz radio chipset, and contains all the functions necessary for a full or half duplex packet baseband transceiver.

The HFA3824A has on-board ADC’s for analog I and Q inputs, for which the HFA3724/6 IF QMODEM is recommended. Differential phase shift keying modulation schemes DBPSK and DQPSK, with optional data scrambling capability, are combined with a programmable PN sequence of up to 16 bits. Built-in flexibility allows the HFA3824A to be configured through a general purpose control bus, for a wide range of applications. A Receive Signal Strength Indicator (RSSI) monitoring function with on-board 6-bit 2 MSPS ADC provides Clear Channel Assessment (CCA) to avoid data collisions and optimize network throughput. The HFA3824A is housed in a thin plastic quad flat package (TQFP) suitable for PCMCIA board applications.

Features

? Complete DSSS Baseband Processor

? High Data Rate. . . . . . . . . . . . . . . . . . . . . . .up to 4 MBPS

? Processing Gain . . . . . . . . . . . . . . . . . . . . . . . . up to 12dB

? Programmable PN Code . . . . . . . . . . . . . . . .up to 16 Bits

? Ultra Small Package . . . . . . . . . . . . . . . . . . . . 7 x 7 x 1mm

? Single Supply Operation (44MHz Max) . . . . . 2.7V to 5.5V

? Modulation Method. . . . . . . . . . . . . . . .DBPSK or DQPSK

? Supports Full or Half Duplex Operations

? On-Chip A/D Converters for I/Q Data (3-Bit, 44 MSPS) and RSSI (6-Bit, 2 MSPS)

? Backward Compatible with HSP3824

? Programmable Rotation I, Q Sense

Applications

? Systems Targeting IEEE802.11 Standard

? DSSS PCMCIA Wireless Transceiver

? Spread Spectrum WLAN RF Modems

? TDMA Packet Protocol Radios

? Part 15 Compliant Radio Links

? Portable Bar Code Scanners/POS Terminal

? Portable PDA/Notebook Computer

? Wireless Digital Audio

? Wireless Digital Video

? PCN/Wireless PBX

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