PGA2311U

Audio Special Purpose Overview

The PGA2311U is a dual-channel stereo audio volume control integrated circuit manufactured by Texas Instruments. It operates on a single 5V supply, with a voltage range of ±4.75V to ±5.25V. The device features a THD+N of 0.0002% and supports a gain adjustment range from 31.5dB to -95.5dB. Packaged in a 16-SOIC surface-mount format, it functions as a digital potentiometer for audio applications, controlled via an SPI interface. It is rated for operation between -40°C and +85°C.

Audio Special Purpose Feature Summary

• Dual-channel stereo configuration for independent left and right channel control
• SPI digital interface for precise gain adjustment
• Low distortion performance with 0.0002% THD+N
• Wide dynamic range covering 31.5dB to -95.5dB attenuation

Audio Special Purpose Applications

• Audio equipment requiring digital volume control
• Musical instruments with electronic signal processing
• Professional audio mixing consoles

Audio Special Purpose Procurement Notes

Verify the specific suffix 'U' against the manufacturer's datasheet to confirm package type and tape/reel specifications. Ensure the design accommodates the 16-SOIC footprint dimensions and thermal requirements for the specified operating temperature range.

Audio Special Purpose Selection Notes

Select this component when a low-noise, digitally controlled analog volume attenuator is required for stereo signals. Confirm that the system power supply aligns with the ±4.75V to ±5.25V specification and that the microcontroller supports the necessary SPI communication protocol for gain setting.

Audio Special Purpose Part Context

This part belongs to the PGA2311 series of audio volume controls. It serves as a digital alternative to mechanical potentiometers, offering improved reliability and integration in compact designs. The 'U' designation typically indicates the SOIC-16 package variant within the product line.

Audio Special Purpose Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify pin compatibility and electrical parameters before considering any cross-reference components.