LM4867MT/NOPB

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The LM4867MT/NOPB is a dual low-voltage audio power amplifier from Texas Instruments. It is designed to provide high-efficiency, low-voltage bipolar power amplification in portable devices such as Personal Digital Assistants (PDAs), smart phones, and digital cameras. The LM4867MT/NOPB is capable of operating with low voltage supplies at as low as 2.7 V and as high as 5.5 V, making it ideal for a variety of applications.

The LM4867MT/NOPB is a high-current, high-efficiency monolithic dual power amplifier that produces 75 mW into a 3 ohm load with a supply of 4.2 V and 1000 mW into a 3 ohm load with a 5.5 V supply. It is capable of driving loudspeakers up to 6 ohms and allows for stereo or bridge-mono operation. The low-voltage capability of the device and its high efficiency allows it to be used in a variety of battery-powered applications.

The LM4867MT/NOPB utilizes a gain-setting resistor for adjusting the amplifier’s gain to facilitate volume and gain control. The built-in Mute mode and Stand-By mode features allow for efficient power management. With the built-in over-current and thermal protection, the device is suitable for audio power applications in a variety of applications, including portable and consumer products such as cellular phones, CD players, MP3 players, and portable multimedia players.

The LM4867MT/NOPB provides a wide operating temperature range of -40°C to +85°C and is available in 8-lead PDIP and SOIC packages. It is rated for operation up to an ambient temperature of +85°C and includes an on-board power-down feature that allows for the power supply current to be reduced to a few tens of microamperes.

The working principle behind the LM4867MT/NOPB is based on the basic operational principle of an operational amplifier. The device works by taking a voltage input and amplifying it to a higher level for use in an audio system. The voltage input is passed through an operational amplifier, which is then amplified by an output stage that is powered by the amplifying device’s power supply.

The LM4867MT/NOPB is a high-efficiency, low-voltage bipolar audio power amplifier that is designed to provide portable devices with high-capacity, high-efficiency audio power amplification. Its low voltage capability and high efficiency make it ideal for a variety of battery-powered applications, and its built-in features such as Mute, Stand-By mode and over-current/thermal protection make it suitable for audio power amplification in a variety of consumer and portable products.

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