PGA2310PA

Audio Special Purpose Overview

The PGA2310PA is a stereo audio volume control integrated circuit manufactured by Texas Instruments. It features a three-wire serial interface for gain adjustment ranging from +31.5 dB to -95.5 dB in 0.5 dB steps. The device operates on a single supply voltage between 4.5 V and 15.5 V, with a typical operating current of 7.5 mA. Key electrical specifications include a total harmonic distortion plus noise (THD+N) of 0.0004% at 1 kHz, a dynamic range of 120 dB, and a gain-bandwidth product of 1.5 MHz. It is housed in a 16-pin SOIC package.

Audio Special Purpose Feature Summary

• Stereo audio volume control with digital gain adjustment via three-wire serial interface
• Gain range of +31.5 dB to -95.5 dB with 0.5 dB step resolution
• Low distortion performance: 0.0004% THD+N at 1 kHz
• High dynamic range of 120 dB

Audio Special Purpose Applications

• Professional audio mixing consoles
• Home theater preamplifiers
• Digital audio processors

Audio Special Purpose Part Context

The PGA2310PA belongs to the PGA2310 family of stereo audio volume controls. It is functionally equivalent to the PGA2310UA variant but utilizes a Plastic Small Outline (SOIC) surface-mount package instead of a ceramic DIP package. Both variants share identical electrical characteristics and pinouts, differing primarily in physical packaging and thermal properties.

Audio Special Purpose Replacement Considerations

The PGA2310UA is a direct functional replacement with identical electrical specifications, differing only in package type (Ceramic DIP vs. SOIC). Other PGA2310 family members like the PGA2311 offer similar functionality but may have different pin configurations or feature sets requiring schematic review.