Texas Instruments

LM1973N/NOPB  

Audio Special Purpose ICs

LM1973N/NOPB Description

The LM1973N/NOPB is a specialized Integrated Circuit (IC) designed for volume control applications, manufactured by Texas Instruments. This 20-DIP packaged IC is part of the Audio Special Purpose ICs category, offering robust performance and reliability in both consumer and professional audio systems. The LM1973N/NOPB operates within a temperature range of 0°C to 70°C (TA), making it suitable for a variety of environments where stable performance is crucial. It features a supply voltage range of 4.5V to 12V, ensuring compatibility with a wide array of power supply configurations.

LM1973N/NOPB Features

The LM1973N/NOPB is equipped with several notable features that set it apart from other volume control ICs in the market. It boasts a high dynamic range of 76dB, which allows for precise control over audio levels, ensuring clarity and fidelity in audio output. With three channels of volume control, this IC can manage multiple audio sources simultaneously, making it ideal for complex audio systems. The LM1973N/NOPB also supports SPI interface, enabling seamless communication and control with other digital components in an audio setup.

The IC is housed in a through-hole package, specifically a tube, which facilitates easy integration into printed circuit boards (PCBs) and ensures mechanical stability. It is RoHS compliant3 and REACH unaffected, adhering to stringent environmental and safety standards. The moisture sensitivity level (MSL) is rated at 1 (Unlimited), indicating that the IC is highly resistant to moisture, which is beneficial for long-term reliability in various operational conditions.

LM1973N/NOPB Applications

The LM1973N/NOPB is designed to cater to both consumer and professional audio applications. In consumer audio, it can be used in high-fidelity home theater systems, soundbars, and advanced audio equipment where precise control volume is essential. For professional audio, the IC is ideal for use in mixing consoles, studio monitors, and live sound reinforcement systems, where the ability to manage multiple audio channels with high precision is critical.

The LM1973N/NOPB's compatibility with a wide range of supply voltages and its high dynamic range make it suitable for applications that require flexibility and high performance. Its SPI interface allows for easy integration into digital audio systems, enabling advanced control and automation capabilities. The robust through-hole package and high moisture resistance ensure that the IC can withstand the rigors of professional use and harsh environmental conditions.

Conclusion of LM1973N/NOPB

The LM1973N/NOPB, manufactured by Texas Instruments, is a versatile and reliable volume control IC tailored for high-performance audio applications. Its 76dB dynamic range, three-channel control, and SPI interface provide superior audio management capabilities. The through-hole package and high moisture resistance ensure durability and ease of integration into various audio systems.

Despite being marked as obsolete, the LM1973N/NOPB remains a valuable component for those seeking a robust and precise volume solution control. Its adherence to environmental standards and compatibility with a broad range of supply voltages make it a reliable choice for both consumer and professional audio setups. For applications requiring high-fidelity audio control and long-term reliability, the LM1973N/NOPB stands out as a superior option.

LM1973N/NOPB Documents

Download datasheets and manufacturer documentation for LM1973N/NOPB