LM1971N/NOPB

Audio Special Purpose Overview

The LM1971N/NOPB is a digitally controlled audio attenuator from the Overture series, manufactured by Texas Instruments. It functions as a volume control IC housed in an 8-PDIP package with through-hole mounting. The device operates on a single supply voltage ranging from 4.5V to 12V and supports an operating temperature range of -40°C to +85°C. It features an SPI interface for digital control and provides a dynamic specification of 115dB. This component is designed for precise audio signal attenuation in communication systems.

Audio Special Purpose Feature Summary

• Digitally controlled volume control with SPI interface
• 115dB dynamic specification for high-fidelity audio
• Single-supply operation (4.5V to 12V)
• 8-PDIP through-hole package

Audio Special Purpose Applications

• Communication Systems

Audio Special Purpose Procurement Notes

Verify the specific revision level and RoHS compliance status directly with Texas Instruments or authorized distributors before procurement. Confirm that the 8-PDIP packaging matches the target PCB footprint requirements. Ensure the SPI interface logic levels are compatible with the controlling microcontroller within the 4.5V to 12V supply range.

Audio Special Purpose Selection Notes

Select this component when a digitally adjustable audio attenuator with low noise and high dynamic range is required. The 8-DIP package suits prototyping or applications requiring through-hole assembly. Verify that the system design can accommodate the SPI communication lines and that the supply voltage remains within the specified 4.5V to 12V limits for optimal performance.

Audio Special Purpose Part Context

The LM1971 belongs to the Overture series of audio processors from Texas Instruments. This series focuses on digitally controlled audio functions, offering integration of volume control and mute capabilities. The LM1971 specifically addresses needs for precise attenuation in professional and consumer audio equipment, providing a robust solution for signal management in communication devices.

Audio Special Purpose Replacement Considerations

Check for direct pin-compatible replacements within the Overture series or other TI audio attenuators. Verify that any substitute maintains the same SPI interface protocol, supply voltage range, and dynamic performance specifications.