PGA2320IDWRG4

Audio Special Purpose Overview

The PGA2320IDWRG4 is a dual-channel programmable gain amplifier (PGA) from Texas Instruments, designed for high-fidelity stereo volume control. It features an SPI serial interface for precise gain adjustment ranging from +31.5 dB to -95.5 dB in 0.5 dB steps. The device offers a typical gain error of ±0.05 dB and a dynamic range of approximately 120 dB. It operates on dual supplies between ±4.5 V and ±15.5 V and includes zero-crossing detection to prevent audible glitches during gain changes. Packaged in a 16-pin SOIC-Wide (DW) with tape-and-reel suffix G4, it supports industrial temperatures from -40°C to +85°C.

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 precision with ±0.05 dB typical gain error and ~120 dB dynamic range
• Integrated zero-crossing detection eliminates switching noise

Audio Special Purpose Applications

• Professional audio mixing consoles and studio monitoring controllers
• High-fidelity (Hi-Fi) preamplifiers and power amplifiers
• Automotive infotainment systems requiring precise volume automation

Audio Special Purpose Procurement Notes

Verify the G4 suffix indicates RoHS compliance and standard packaging configuration. Confirm the DW package variant matches the required PCB footprint. Ensure supply chain sources provide authentic TI components to maintain specified electrical performance metrics.

Audio Special Purpose Selection Notes

Select this component when digital volume control with minimal distortion is required. The dual supply requirement (±4.5V to ±15.5V) must be accommodated in the power design. The SPI interface necessitates compatible microcontroller or DSP GPIO resources for gain programming.

Audio Special Purpose Part Context

The PGA2320 series serves as a digital replacement for mechanical potentiometers in audio signal chains. The IDWRG4 designation specifies the industrial temperature grade, wide-body SOIC package, and reel packaging format within the broader PGA2320 family.

Audio Special Purpose Replacement Considerations

Direct pin-compatible alternatives include the PGA2311 (mono channel) or PGA2310 (dual channel, different gain range). Verify interface compatibility and gain specifications when substituting.