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Product Detailed Parameters
- Description:DIRECT SEQUENCE SPREAD SPECTRUM
- Series:*
- Mfr:Harris Corporation
- Package:Bulk
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- RF Type:-
- Voltage - Supply:-
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Overview
The HFA3724INS2539 is a 400MHz Quadrature IF Modulator/Demodulator from the Harris PRISM chip set, designed for Direct Sequence Spread Spectrum (DSSS) applications. It integrates all intermediate frequency transmit and receive functions within a single IC. The device operates on a single supply voltage ranging from 2.7V to 5.5V and supports a broad frequency range of 10MHz to 400MHz. Key electrical specifications include an I/Q amplitude balance of 0.2dB and phase balance of 2 degrees. It features a 5th order programmable low pass filter with a cutoff range of 2.2MHz to 17.6MHz. The integrated limiting IF amplifier provides 84dB of gain and includes a built-in Receive Signal Strength Indicator (RSSI).
Feature Summary
- Integrates complete IF transmit and receive functions for quadrature modulation.
- Includes a two-stage limiting IF amplifier with built-in RSSI capability.
- Features a programmable 5th order low pass filter for baseband shaping.
- Supports fast transmit-receive switching with power management modes.
Applications
- Direct Sequence Spread Spectrum (DSSS) RF modems
- Wireless communication systems requiring quadrature modulation
- PRISM chip set implementations
Procurement Notes
Verify component authenticity through authorized distributors or original manufacturer channels. Confirm RoHS compliance status as datasheet indicates non-compliance in some records. Check package integrity and pin configuration against official specifications before integration. Ensure supply chain documentation matches the specific suffix INS2539 for accurate traceability.
Selection Notes
Select this component for designs requiring high integration of IF processing blocks. It is suitable for applications needing precise I/Q balance and programmable filtering. Consider the single-supply operation and low LO drive requirements when designing power and local oscillator circuits. Verify compatibility with the surrounding PRISM chipset components for optimal system performance.
Part Context
This part belongs to the Harris Corporation PRISM family of highly integrated five-chip solutions for RF modems. The HFA3724 serves as the baseband converter for quadrature modulation, complementing other chips in the series to form a complete DSSS signaling solution. It replaces discrete IF stages with a unified monolithic implementation.
Replacement Considerations
Consult official Harris/Harris Semiconductor documentation for qualified substitute part numbers. Verify functional equivalence regarding frequency range, gain, and interface compatibility before substitution.
FAQ
What is the operating temperature range?
The device operates between -40°C and 85°C.
Does the HFA3724 include signal strength indication?
Yes, it features a built-in Receive Signal Strength Indicator (RSSI).
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