PGA4311UG4

Audio Special Purpose Overview

The PGA4311UG4 is a four-channel audio volume control integrated circuit manufactured by Texas Instruments. It operates within a supply voltage range of 4.75 V to 5.25 V and draws a typical operating current of 17 mA. The device 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 operating temperature range from -40°C to +85°C.

Audio Special Purpose Feature Summary

• Four independent audio channels with precise digital volume control
• Ultra-low THD+N of 0.0002% for high-fidelity signal processing
• Low input offset voltage of 250 µV ensuring minimal DC error
• Single 5V supply operation with low quiescent current consumption

Audio Special Purpose Applications

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

Audio Special Purpose Procurement Notes

Verify the G4 suffix indicates lead-free compliance and RoHS adherence when sourcing. Confirm the SOIC-28 package type matches the PCB footprint requirements. Ensure the operating environment stays within the specified -40°C to +85°C temperature range for optimal performance. Check for moisture sensitivity handling instructions during storage and assembly.

Audio Special Purpose Selection Notes

Select this component for designs requiring four-channel analog volume control without external switches. The PGA4311UG4 is suitable for single-supply 5V systems. Compare against other PGA43xx series variants if different channel counts or interface options are needed. Ensure the 100 kOhm load impedance requirement aligns with the downstream audio stage input characteristics.

Audio Special Purpose Part Context

The PGA4311UG4 belongs to the PGA4311 family of audio volume controls from Texas Instruments. It is a commercial-grade version of the PGA4311, distinguished by the G4 suffix which typically denotes environmental compliance. This part is designed to replace mechanical potentiometers in digital audio systems, offering precise attenuation steps via serial interfaces.

Audio Special Purpose Replacement Considerations

Direct pin-to-pin replacements may include other PGA4311 variants such as the PGA4311U. Verify that any substitute maintains the same SOIC-28 package and electrical specifications. Cross-reference with PGA4310 or PGA4312 if channel count differences are acceptable.