PGA2311P

Audio Special Purpose Overview

The PGA2311P is a dual-channel stereo audio volume control 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 gain adjustment range from +31.5dB to -95.5dB in 0.5dB steps, controlled via an SPI-compatible serial interface. Key electrical specifications include a total harmonic distortion plus noise (THD+N) of 0.0002% and a gain-bandwidth product of 10MHz. It supports a load impedance of 100kΩ and functions within a temperature range of -40°C to +85°C. The component is housed in a PDIP-16 package.

Audio Special Purpose Feature Summary

• Dual-channel stereo architecture for independent left and right channel control
• SPI-compatible serial interface for digital gain adjustment
• Gain range of +31.5dB to -95.5dB with 0.5dB step resolution
• Low distortion performance with THD+N of 0.0002%

Audio Special Purpose Applications

• Professional audio mixing consoles
• Home theater preamplifiers
• High-fidelity audio receivers

Audio Special Purpose Procurement Notes

Verify the package type matches the requirement, as the PGA2311 series includes surface-mount variants like the PGA2311UA. Confirm the specific suffix indicates the PDIP-16 through-hole configuration. Check current production status and lead times directly with authorized distributors or Texas Instruments, as availability varies by region and time.

Audio Special Purpose Selection Notes

Select the PGA2311P when a through-hole PDIP-16 package is required for prototyping or specific board layouts. Ensure the design accommodates the 4.75V to 5.25V single-supply constraint. Verify that the system logic levels are compatible with the SPI interface or utilize appropriate level shifters if operating at different voltages.

Audio Special Purpose Part Context

The PGA2311P belongs to the PGA231x family of programmable gain amplifiers designed for high-performance audio applications. It serves as a digital potentiometer replacement, offering precise electronic volume control without the mechanical wear associated with traditional pots. The P suffix specifically denotes the plastic dual in-line package variant within this product line.

Audio Special Purpose Replacement Considerations

The PGA2311UA is the surface-mount SOIC-16 equivalent with identical electrical characteristics. Other members of the PGA231x family may offer similar functionality but require verification of pinout compatibility and package constraints before substitution.