مدار مجتمع (آی سی) آی سی‌کاربرد ویژه

Product Attributes

Introduction

The Direct Sequence (DsSS) baseband processor is part of the 2.4GHz radio chipset, and contains all the functions necessary for a full or half duplex packet baseband transceiver. It 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 it to be configured through a general purpose control bus, for a wide range of applications. A Receive Signal Strength Indicator (RSSl) monitoring function with on-board 6-bit 2 MSPS ADC provides Clear Channel Assessment (CCA) to avoid data collisions and optimize network throughput. It 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 4MBPS
• Processing Gain up to 12dB
• Programmable PN Code up to 16 Bits
• Ultra Small Package: 7x7x1mm
• Single Supply Operation (33MHz Max): 2.7V to 5.5V
• Single Supply Operation (44MHz Max): 3.3V to 5.0V
• 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 RSSl (6-Bit, 2 MSPS)
• Backward Compatible with HSP3824

Applications

• Systems Targeting IEEE802.11 Standard
• Dsss PcMClA 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