PGA2320IDWR

Audio Special Purpose Overview

The PGA2320IDWR is a stereo volume control integrated circuit from Texas Instruments, functioning as a dual-channel programmable gain amplifier. It provides digital gain adjustment via an SPI interface with a range of +31.5 dB to -95.5 dB in 0.5 dB steps. The device features a typical dynamic range of 120 dB and total harmonic distortion plus noise (THD+N) of approximately 0.0004%. It operates on dual supplies ranging from ±4.5 V to ±15.5 V and includes zero-crossing detection to prevent audible glitches during gain changes. Packaged in a 16-SOIC (DW) format, it supports industrial temperature ranges.

Audio Special Purpose Feature Summary

• Dual-channel stereo programmable gain amplifier with SPI digital control
• Gain range of +31.5 dB to -95.5 dB with 0.5 dB step resolution
• High performance metrics including ~120 dB dynamic range and ~0.0004% THD+N
• Built-in zero-crossing detection for glitch-free volume transitions

Audio Special Purpose Applications

• Professional audio mixing consoles and studio monitoring controllers
• High-fidelity audio preamplifiers and master bus processing units
• Automotive infotainment systems requiring precise digital volume control

Audio Special Purpose Procurement Notes

Verify the specific ordering suffix against the manufacturer's current datasheet to confirm package type and tape/reel specifications. The 'R' suffix typically indicates reel packaging, but official documentation should be consulted for exact handling and moisture sensitivity levels prior to procurement.

Audio Special Purpose Selection Notes

Select this component when high channel matching and low distortion are critical for the audio signal chain. Ensure the design accommodates dual power supplies within the ±4.5 V to ±15.5 V range. Verify that the host microcontroller can support the required SPI communication protocol for gain register updates.

Audio Special Purpose Part Context

This part belongs to the PGA2320 family of stereo volume controls. Variants such as PGA2320IDWG4 exist, often differing in packaging or environmental compliance status. The IDWR designation specifically identifies the SOIC-16 wide package variant intended for surface-mount assembly.

Audio Special Purpose Replacement Considerations

The PGA2320IDW is listed as a recommended replacement for discontinued variants like the PGA2320IDWG4. Verify pin compatibility and electrical parameters before substituting.