LM1971MX

Audio Special Purpose Overview

The LM1971MX is a digitally controlled audio attenuator from Texas Instruments' Overture series, housed in an 8-SOIC surface-mount package. It functions as a volume control with a single channel and SPI interface. The device operates on a supply voltage ranging from 4.5V to 12V and supports an operating temperature range of -40°C to +85°C. Key specifications include a dynamic range of 115dB. It is designed for applications such as communication systems.

Audio Special Purpose Feature Summary

• Digitally controlled volume attenuation via SPI interface
• High dynamic range of 115dB
• Single-channel operation in 8-SOIC package

Audio Special Purpose Applications

• Communication Systems

Audio Special Purpose Procurement Notes

Verify the specific ordering suffix against the manufacturer datasheet to confirm pinout and electrical characteristics match the required design. Confirm packaging options such as Tape & Reel or Cut Tape availability directly with authorized distributors. Ensure the component grade meets project requirements.

Audio Special Purpose Selection Notes

Select this component when a low-profile, digitally controlled volume knob replacement is needed in communication equipment. Verify that the system microcontroller can support the SPI protocol required for gain adjustment. Check that the 4.5V to 12V supply range aligns with the target board power rails.

Audio Special Purpose Part Context

This part belongs to the Overture series of audio processors. It serves as a digital alternative to mechanical potentiometers, offering precise gain steps and mute functionality within a compact 8-SOIC footprint suitable for space-constrained PCB layouts.

Audio Special Purpose Replacement Considerations

Consult the official TI substitution guide for verified equivalents. Generic audio attenuators may lack the specific SPI command set or 115dB dynamic range.