LM4673TM/NOPB

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The LM4673TM/NOPB is a high performance audio amplifier integrated circuit (IC) designed and marketed by Texas Instruments (TI). The LM4673TM/NOPB is a dual channel stereo amplifier specifically intended for two-channel audio applications such as home theater, car audio, and multimedia systems.

As an audio amplifier, the LM4673VM/NOPB is designed to provide a high degree of fidelity and performance for both professional and consumer audio applications. The LM4673TM/NOPB features features an advanced Class D architecture utilizing an advanced switching amplifier design for higher performance, improved power efficiency, and enhanced sound quality.

The LM4673TM/NOPB is a dual-channel, Class D, audio amplifier, configurable for either single-ended or bridge-tied operation, and capable of delivering up to 120W of necessary power on a single IC. The LM4673TM/NOPB includes on-chip safety features such as over-voltage and under-voltage protection and actively-managed power dissipation to shut the output down in the event of an over-temperature condition. The LM4673TM/NOPB also features advanced switch-mode power supply architecture for improved power efficiency and distortion characteristics.

The LM4673TM/NOPB device consists of two distinct sections: the amplifier section and the power supply section. The amplifier section is responsible for amplifying the input signal and driving the output load. The power supply section includes the power supplies and regulators that provide necessary power to the system. The power supplies section also provides necessary feedback control to the amplifier section, allowing for improved efficiency and performance.

The LM4673TM/NOPB is a current-mode switching amplifier, meaning that it operates by switching current instead of voltage. The LM4673TM/NOPB employs advanced PWM (Pulse Width Modulation) switching techniques to control the output power. PWM switching allows the LM4673TM/NOPB to produce more power from less current, resulting in more efficient power conversion and increased overall sound quality.

The LM4673TM/NOPB features a Frequency Adaptive Modulation (FAM) system. FAM is a sophisticated feedback algorithm and control system that dynamically alters the amplifier\'s Switching Frequency (SF) to maximize efficiency and power output. This system allows the LM4673TM/NOPB to operate at maximum efficiency across the entire audible frequency range.

The LM4673TM/NOPB also features an Error Reduction Protection (ERP) system, which monitors the current output of the amplifier and limits the power to the output stage in the event of an overload. This allows the LM4673TM/NOPB to keep its output power at a maximum level while avoiding any current over-shoots or distortion.

The LM4673TM/NOPB is intended for use in a wide range of professional and consumer audio applications. These include home theater and car audio systems, multimedia systems, portable audio devices, and home entertainment systems. LM4673TM/NOPB is an ideal choice for customers who demand high fidelity, reliability, and performance from their audio equipment.

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