F4481LKGI

Overview

The F4481LKGI is a quad path transmit digital variable gain amplifier (TX DVGA) designed for wireless communication systems. It operates within a frequency range of 400 MHz to 1.1 GHz and requires a supply voltage between 3.15 V and 3.45 V. The device features 100 Ω differential inputs and 50 Ω single-ended outputs, packaged in a 56-LGA (8x8) surface-mount configuration.

Feature Summary

• Integrates four independent signal paths for simultaneous transmission processing
• Converts differential input signals to single-ended output signals
• Provides digital control interface for precise gain adjustment

Applications

• LTE base station transmitter modules
• UMTS/WCDMA radio unit front-ends
• Multi-standard wireless infrastructure equipment

Procurement Notes

Verify component authenticity through authorized Renesas distributors. Confirm package marking matches the 56-LGA specification. Ensure ESD protection protocols are followed during handling due to sensitivity. Cross-reference datasheet revisions to confirm pinout compatibility with existing designs.

Selection Notes

Select this component when differential-to-single-ended conversion is required in multi-path architectures. Consider the 400 MHz to 1.1 GHz operational bandwidth against system requirements. Evaluate power consumption profiles relative to thermal management capabilities in the final assembly.

Part Context

This part belongs to the F4481 series of RF amplifiers from Renesas Electronics. It complements other components in the family by offering specific gain control capabilities for lower frequency bands compared to higher-frequency variants.

Replacement Considerations

Consult official substitution lists for direct replacements. Verify that alternative parts maintain identical pin configurations and electrical characteristics to ensure seamless integration without circuit redesign.