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| TM PRISMTM Full Duplex Radio Front End Data Sheet February 1997 File Number 4238.1 P RE L I M I NA R Y For Voice and Data The Intersil PRISM(R) Full Duplex Radio Front End Chip Set is a highly integrated 7 chip solution for RF modems or transceivers employing quadrature modulation and demodulation. Significant integration of independent transmit and receive functions employ seven ICs. The Receive chain consists of: The HFA3424/21, two high performance, low noise LNA's which cover the 1.7GHz to 2.7GHz range; the HFA3661, a full frequency range combined second LNA/down converter mixer with an LNA bypass mode; the HFA3761, a 10MHz to 400MHz, 82dB IF AGC amplifier with 76dB of dynamic range, integrated with a quadrature demodulator and selectable low pass filters. The Transmit chain includes: The HFA3763, a 10MHz to 400MHz quadrature modulator integrated with selectable low pass shaping filters and an output stage with a gain control range from 8dB to -35dB; the HFA3663/64 are two IF to RF upconverters integrated with an output RF AGC amplifier with gain control range of 20dB to -10dB; and the HFA3925/26, two monolithic RF power amplifiers. To complete the set, Intersil offers a dual synthesizer for RF and IF local oscillator applications, the HFA3524. Each of these functions may be used individually or in any combination of a variety of RF modem applications. This chip set is intended to support a variety of full duplex radio applications that employ modulation and demodulation architectures requiring highly linear analog processing schemes. Intersil also offers a complete line of high speed A/D and D/A converters that can interface with this Full Duplex Chip Set. Features * Provides Antenna-to-I/Q Baseband Stream * Low Voltage Operation from 2.7V to 5.5V * 1.7GHz - 2.7GHz ISM Band Operation * Single Heterodyne Conversion * Programmable Antialiasing and Shaping Filters * 10MHz to 400MHz IF Operation with AGC * Transmit Variable Gain Range . . . . . . . . . . . . . . . . . .60dB * Receive AGC Range . . . . . . . . . . . . . . . . . . . . . . . . .76dB * Chip Rates to 22M Chip/s * Power Management Control * Low Profile PCMCIA-Compatible Surface Mount Packaging Applications * Wireless Local Loop Systems * PCMCIA Wireless Transceivers * WLAN RF Modems * TDMA/CDMA Radios * Part 15 Compliant Radio Links * Full Duplex Point To Point Transceivers * PCM Repeater/Transceivers Typical Application Diagram PRISMTM FULL DUPLEX CHIP SET HFA3421 (File #4288) D U P L E X E R LNA HFA3424 (File #4131) HFA3524/A (File #4062) BPF HFA3661 (File #4240) LNA RF/IF CONVERTER RF LO1 SYNTHESIZER IF LO1 BASEBAND HFA3524 (File #4062) HFA3925 (File #4132) PA HFA3926 (File #4282) BPF SYNTHESIZER RF LO2 AGC IF/RF CONVERTER HFA3663 (File #4241) HFA3664 (File #4242) AGC QMODEM LPF OPTIONAL WHEN IN ANALOG MODE PRISMTM FULL DUPLEX RADIO CHIP SET, FILE #4238 IF LO2 HFA3763 (File #4237) LPF D/A HFA3761 (File #4236) FILTER IF AGC QMODEM LPF LPF A/D 2-1 CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures. 1-888-INTERSIL or 321-724-7143 | Intersil and Design is a trademark of Intersil Corporation. | Copyright (c) Intersil Corporation 2000 PRISM is a registered trademark of Intersil Corporation. PRISM logo is a trademark of Intersil Corporation. |
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