LM1971MX/NOPB

Audio Special Purpose Overview

The LM1971MX/NOPB is a digitally controlled audio volume control integrated circuit from Texas Instruments' Overture series. It features an 8-bit SPI interface for precise attenuation adjustment, offering a total range of 62 dB with 1 dB steps. The device operates on a single supply voltage between 4.5 V and 12 V and supports a maximum frequency of 100 kHz. Designed for surface mount applications in the 8-SOIC package, it functions within a temperature range of -40°C to 85°C. Key electrical specifications include a 40 kOhm impedance and a channel count of one.

Audio Special Purpose Feature Summary

• Digital Volume Control: 8-bit resolution providing 62 dB total attenuation range with 1 dB step size.
• SPI Interface: Serial Peripheral Interface allows for simple digital control of audio levels.
• Wide Supply Range: Operates efficiently with a supply voltage between 4.5 V and 12 V.
• High Dynamic Range: Supports a dynamic range specification of 115 dB.

Audio Special Purpose Applications

• Communication Systems
• Audio Equipment Volume Control
• Consumer Electronics

Audio Special Purpose Procurement Notes

Verify the specific ordering suffix against manufacturer documentation to confirm package type and tape/reel specifications. Ensure compatibility with existing SPI bus protocols and voltage levels in the target design. Confirm RoHS compliance status through official datasheets prior to procurement.

Audio Special Purpose Selection Notes

Select this component when a digitally adjustable audio attenuator is required with low part count. The 8-SOIC package suits space-constrained PCB layouts. Verify that the system's microcontroller can provide the necessary SPI clock speeds and that the 4.5V minimum supply voltage aligns with the power architecture.

Audio Special Purpose Part Context

This component belongs to the Overture series of audio special purpose ICs by Texas Instruments. These devices are engineered for high-performance audio signal processing tasks, specifically focusing on volume control and attenuation in consumer and industrial audio applications.

Audio Special Purpose Replacement Considerations

The LM1971M is a related variant within the same family. Verify pinout compatibility and functional equivalence before substitution. Check if the non-NOPB suffix affects environmental compliance or specific electrical tolerances as defined in the manufacturer's cross-reference data.