HFA1105W

Overview

The HFA1105W is a single-channel current feedback video operational amplifier manufactured by Renesas Electronics Corporation. It features a bandwidth of 330 MHz and a slew rate of 1000 V/µs, designed for high-speed signal processing applications. The device operates on dual supply voltages ranging from ±4.5V to ±5.5V with a typical supply current of 5.8 mA per channel. It supports an output current of 60 mA and is housed in an 8-SOIC surface-mount package.

Feature Summary

• High-speed current feedback architecture optimized for video signal integrity
• Low power consumption suitable for portable and battery-operated systems
• Wide supply voltage range supporting standard dual-rail configurations

Applications

• Video buffering and amplification in display systems
• Signal conditioning for high-frequency analog circuits
• Test and measurement equipment requiring fast transient response

Procurement Notes

Verify the specific suffix (e.g., IB, Z) against the datasheet to confirm pinout and packaging details. Confirm RoHS compliance status as manufacturing sites may vary. Check for obsolescence notices or PCNs affecting lead times. Ensure the supplier is an authorized distributor to guarantee authenticity. Validate that the operating temperature range meets your system requirements.

Selection Notes

Select this component when a high slew rate and wide bandwidth are critical for maintaining signal fidelity in video applications. Consider the current feedback topology for its consistent bandwidth regardless of gain settings. Evaluate the power dissipation capabilities within the SOIC package for your thermal design. Compare against voltage feedback alternatives if lower noise is required over speed.

Part Context

This part belongs to the HFA series of video amplifiers from Renesas, formerly Intersil. The series is known for combining high performance with low power consumption. The HFA1105W specifically targets applications requiring fast settling times and minimal distortion in video signal paths.

Replacement Considerations

Check for direct replacements like the HFA1105IB or HFA1105Z which share similar electrical characteristics but may differ in packaging or environmental compliance. Verify pin compatibility before substitution.