LM4867MTEX/NOPB

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The LM4867MTEX/NOPB is a compact, low-power quad bridge-tied load audio amplifier designed for use in portable VCR, television, audio systems and telephone applications. This device combines four independent bridge-tied load (BTL) amplifiers into a single package, reducing power consumption and board space requirements. The LM4867MTEX/NOPB device has a wide operating temperature range, low voltage supply requirements, and offers an improvement on power efficiency over traditional single-ended systems.

The LM4867MTEX/NOPB device operates from a single supply voltage and requires very little in the way of external components. Each amplifier has a low power supply current requirement of 1.5mA and a typical supply voltage range of 8.0V to 16V. The device is designed to be able to operate with a supply voltage of up to 12V without the need for external components, but if the supply voltage is greater than 12V, there are external components recommended. Additionally, the device contains mute, swell, and stand-by features.

The LM4867MTEX/NOPB device can replace up to four single-ended audio power amplifiers with a single integrated package. This reduces power consumption and board space requirements, while maintaining a fairly high level of performance. The device is capable of supplying 2W of continuous average power into 4Ω, 8Ω and 16Ω loads from a single supply voltage. Additionally, the device includes thermal shutdown, output short-circuit protection, and overvoltage protection.

The device has a wide bandwidth and low distortion levels, making it suitable for a variety of applications. The device is designed with a low quiescent current of only 1.5mA per amplifier, making it ideal for battery powered applications. It has an improved power efficiency of better than 85% making it an ideal choice for use in portable audio products. Additionally, it has an ultra-low output impedance of 4Ω making it suitable for use with very low performance speakers.

The LM4867MTEX/NOPB device has two main operating modes, a single-ended and bridge-tied load mode. In the single-ended mode, the device operates with a single amplifier connected to a single load. This is the most efficient mode, with a typical gain of only 6dB and power efficiency of better than 85%. The bridge-tied load mode works by connecting two amplifiers in series with a single load. This mode has a typical voltage gain of 12dB, but has a lower power efficiency than the single-ended mode. Additionally, the device can be used in parallel mode, which has a typical gain of 18dB, but has a low power efficiency of only 75%.

The LM4867MTEX/NOPB device is a versatile, low-power audio amplifier designed to be used in a variety of applications. The device combines four independent bridge-tied load amplifiers in a single package, reducing power consumption and board space requirements. The device operates from a single supply voltage and requires very few external components. It has a wide operating temperature range and low voltage supply requirements, making it suitable for use in portable VCR, television, audio systems and telephone applications. Additionally, the device has an improved power efficiency over traditional single-ended systems, making it an ideal choice for use in portable audio products.

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