HFA3724IN

Overview

The HFA3724IN is a quadrature IF modulator/demodulator IC from Harris Corporation, designed for RF modem applications. It supports frequency ranges of 10MHz to 400MHz and is compatible with standards including 802.11, PCS, TDMA, WLL, and WLAN. The device utilizes Direct Sequence Spread Spectrum (DSSS) signaling as part of the PRISM chip set solution. It is housed in an 80-TQFP package measuring 14x14 mm. The component operates within a temperature range of -40°C to 85°C and features tin/lead terminal plating.

Feature Summary

• Integrates quadrature modulation and demodulation functions for RF signal processing
• Supports DSSS signaling protocols for wireless communication systems
• Compatible with multiple wireless standards including WLAN and PCS

Applications

• 802.11 wireless local area network systems
• PCS mobile communication devices
• TDMA radio equipment
• WLL fixed wireless access terminals

Procurement Notes

Verify component authenticity through authorized Harris or Intersil distributors due to legacy status. Confirm RoHS compliance requirements as the specific variant listed is non-compliant. Validate package integrity and pin configuration against the 80-TQFP specification before integration. Ensure supply chain sources provide traceable documentation matching the manufacturer's original specifications.

Selection Notes

Select this component for designs requiring integrated quadrature IF modulation and demodulation within the 10MHz to 400MHz range. Consider the 80-TQFP footprint for PCB layout constraints. Evaluate thermal management capabilities given the -40°C to 85°C operating range. Assess compatibility with existing DSSS baseband processors in the PRISM ecosystem.

Part Context

This component belongs to the Intersil/Harris PRISM chipset family, which provides a highly integrated five-chip solution for RF modems. The HFA3724IN specifically handles the analog front-end modulation and demodulation tasks. Harris Corporation merged with L3 Technologies to form L3Harris Technologies, affecting current product support channels.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. The related component HFA3724IN96 shares identical electrical parameters and description but requires verification of functional equivalence for direct replacement.