HFA3824A

HFA3824A Data Sheet August 1998 File Number 4459.2 Direct Sequence Spread Spectrum Baseband Processor 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. ™ 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 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 Asse...