LM1972MX/NOPB Dual-Channel Audio Amplifier Overview
The LM1972MX/NOPB from Texas Instruments is a high-performance dual-channel audio power amplifier designed to deliver robust, low-distortion sound in consumer and professional audio systems. This device combines high output power with compact size, making it ideal for applications where both performance and space efficiency are critical. Fabricante de CI offers this versatile component as part of its extensive range of audio amplification solutions.
Technical Parameters of LM1972MX/NOPB
| Parâmetro | Valor | Unidade |
|---|---|---|
| Número de canais | 2 | canais |
| Distorção harmónica total + ruído (THD+N) | 0.01 | % |
| Output Power (per channel, 8??) | 35 | W |
| Gama de tensão de alimentação | ??12 to ??35 | V |
| Tipo de embalagem | 8-SOIC (Small Outline Integrated Circuit) | |
Caraterísticas de funcionamento
| Caraterística | Especificação |
|---|---|
| Gama de temperaturas de funcionamento | 0??C to +70??C |
| Signal-to-Noise Ratio (SNR) | 95dB (A-weighted) |
| Resposta de frequência | 20Hz to 20kHz (??0.5dB) |
| Impedância de entrada | 100k?? |
| Caraterísticas de proteção | Short-circuit, thermal, and overvoltage protection |
Advantages Over Alternative Audio Amplifiers
The LM1972MX/NOPB offers significant advantages over conventional dual-channel audio amplifiers. Its 35W output per channel (into 8??) delivers more power than many similarly sized amplifiers, making it suitable for driving medium to large speakers without sacrificing sound quality??a key benefit for home stereo and entertainment systems.
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Compared to amplifiers with higher distortion, its 0.01% THD+N ensures cleaner audio reproduction, even at high volumes. This is particularly noticeable in dynamic music passages or movie soundtracks, where distortion can muddy transients like drum hits or orchestral swells.
Its 8-SOIC package saves critical PCB space compared to larger through-hole power amplifiers, enabling sleeker, more compact system designs. This is a major advantage for modern audio equipment, where form factor and aesthetics are increasingly important to consumers.
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The integrated protection features (short-circuit, thermal, overvoltage) also set it apart from basic amplifiers. These safeguards prevent damage to the amplifier and connected speakers in fault conditions, reducing warranty claims and improving system reliability??valuable for both manufacturers and end-users.
Typical Applications of LM1972MX/NOPB
The LM1972MX/NOPB excels in applications requiring dual-channel amplification with a balance of power and size. Key use cases include:
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- Home stereo receivers and integrated amplifiers
- Active speaker systems and powered monitors
- Home theater surround sound amplifiers
- Professional audio mixers and PA systems
- Musical instrument amplifiers (guitar, keyboard)
Texas Instruments?? Legacy in Audio Amplification
As a Texas Instruments product, the LM1972MX/NOPB leverages decades of expertise in analog audio design. TI is renowned for developing amplifiers that balance power, efficiency, and sound quality, with a focus on reliability and ease of integration. Each LM1972MX/NOPB undergoes rigorous testing to ensure consistent performance across operating conditions, making it a trusted choice for audio engineers designing consumer and professional equipment.
Perguntas frequentes (FAQ)
How does the LM1972MX/NOPB handle high-power output while maintaining low distortion?
TI??s proprietary output stage design allows it to deliver 35W per channel into 8?? while keeping THD+N at 0.01%. This combination ensures loud, clear sound without the harshness or muddiness that plagues less sophisticated amplifiers at high volumes.
What makes the 8-SOIC package beneficial for audio system designers?
The 8-SOIC package??s small footprint saves PCB space, enabling more compact amplifier designs. Its surface-mount format also simplifies automated assembly, reducing manufacturing costs while ensuring consistent performance across production runs.
Why is the wide supply voltage range (??12V to ??35V) important?
This range allows flexibility in system design, accommodating everything from low-power setups (??12V) to high-performance systems (??35V). It also enables compatibility with various power supply configurations, reducing the need for custom voltage regulation in many applications.
How do the integrated protection features enhance system reliability?
Short-circuit protection prevents damage if speakers or wiring fail, while thermal protection shuts down the amplifier during overheating. Overvoltage protection guards against power supply spikes??all critical for extending the lifespan of both the amplifier and connected components.
Is the LM1972MX/NOPB suitable for both consumer and professional audio systems?
Yes, its combination of power (35W/channel), low distortion (0.01% THD+N), and compact size makes it ideal for home stereos and professional gear like PA systems or studio monitors. It meets the performance demands of both markets, ensuring consistent audio quality in diverse applications.