PGA4311UA

Audio Special Purpose Overview

The PGA4311UA is a four-channel digital volume control and mute device manufactured by Texas Instruments. It operates within a supply voltage range of 4.75 V to 5.25 V, drawing a typical operating current of 17 mA. The component features a total harmonic distortion plus noise (THD+N) of 0.0002% and an input offset voltage (Vos) of 250 µV. Designed for high-fidelity audio applications, it supports a load impedance of 100 kOhms and functions reliably across an extended temperature range from -40°C to +85°C.

Audio Special Purpose Feature Summary

• Four independent channels with precise digital volume control and mute functionality
• Ultra-low distortion performance with THD+N specified at 0.0002%
• Operates on a single 5V supply with low power consumption of 17 mA
• Integrated I2C-compatible serial interface for configuration

Audio Special Purpose Applications

• Home theater systems requiring multi-channel volume adjustment
• Professional audio mixing consoles and preamplifiers
• High-end car audio amplifiers and head units
• Digital audio processors and AV receivers

Audio Special Purpose Procurement Notes

Verify the package type matches the design requirements, as the standard PGA4311U utilizes an SOIC-28 housing. Confirm that the specific suffix indicates the correct packaging format, such as tube or reel, before ordering. Ensure the PCB footprint aligns with the SOIC-28 dimensions to prevent assembly errors during manufacturing.

Audio Special Purpose Selection Notes

Select this component when a system requires four discrete channels of gain control within a compact surface-mount package. The PGA4311UA is suitable for designs needing low noise and high dynamic range in a 5V logic environment. Compare against the PGA2311 series if only two channels are sufficient, noting the difference in pin count and package size between the SOIC-28 and SOIC-16 options.

Audio Special Purpose Part Context

The PGA4311UA belongs to the PGA4311 family of digital volume controls from Texas Instruments. This series is engineered for high-performance audio signal processing, offering precise attenuation steps and mute capabilities. It serves as a key component in modern audio chains where digital control over analog signal levels is required without introducing audible artifacts.

Audio Special Purpose Replacement Considerations

The PGA4311U/1KG4 is listed as an alternative part number for the PGA4311U series. Verify pin compatibility and software register settings when substituting components within the same family to ensure seamless integration into existing audio circuits.