The LM1972M is a highly integrated, digitally controlled, dual 78dB audio attenuator fabricated on a CMOS process by Texas Instruments. It is designed to provide high-quality volume control in a wide range of audio applications, from professional audio mixing consoles to consumer electronics such as high-fidelity home audio systems and multimedia sound systems.
Key Features
- Precision Attenuation: The LM1972M offers a precise 78dB attenuation range in 0.5dB steps, ensuring fine control over audio levels for a premium listening experience.
- Dual Channel: It features two independent channels, allowing for stereo volume control in audio applications.
- Low Noise and Distortion: This device is designed to maintain signal integrity, boasting low noise and low distortion characteristics that are essential for high-fidelity audio systems.
- Digital Control Interface: The attenuator is easily controlled via a simple 3-wire serial digital interface, enabling seamless integration with microprocessors or digital systems.
- Small Footprint: Housed in a compact 20-pin SOIC package, the LM1972M is suitable for space-constrained applications.
- Power Supply Flexibility: It operates over a wide power supply range, from ±5V to ±15V, accommodating various system designs.
Applications
- Mixing Consoles
- High-Fidelity Home Audio Systems
- Multimedia Sound Systems
- Professional Audio Equipment
Product Specifications
Parameter
Value
Channels
2
Total Harmonic Distortion + Noise
0.001% (Typical)
Dynamic Range
78dB
Package Type
20-pin SOIC
Supply Voltage
±5V to ±15V
With its high-resolution attenuation, low noise, and ease of use, the LM1972M from Texas Instruments stands out as a superior choice for designers looking to implement volume control in their high-quality audio systems.
