LT1490AIN8#PBF

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Linear amplifiers are electronic devices that are used to increase the level of the input signal and provide power gain. This type of device is essential for audio, video, and communications equipment, including mobile phones, computers, televisions and more. LT1490AIN8#PBF is a monolithic complementary MOSFET linear amplifier IC (integrated circuits) designed for high output power and high performance.

Application Fields

This device features low stand-by current and low crossover distortion, suitable for 2-way equal power-split audio applications or single audio systems. In terms of application fields, LT1490AIN8#PBF can be used in power amplifier, professional audio, public address or sound reinforcement systems, as it can provide high output power with high efficiency. This device is also suitable for mixing and equalizing systems, thanks to its low distortion.

Working Principle

The LT1490AIN8#PBF is a linear amplifier that utilizes the MOSFET (metal oxide semiconductor field effect transistor) technology. It operates in two distinct modes, namely class AB and class AB2. In class AB mode, the control voltage of the MOSFET gate is gradually increased in order to achieve power gain. This increases the current, which is measured in amperes and is also referred to as quiescent current. The power gain also increases if the quiescent current is increased.

On the other hand, class AB2 mode involves the use of two MOSFETs whose outputs are combined to achieve the desired gain. As the control voltage of the gate of the first MOSFET increases, the second MOSFET is employed to boost the power gain. This type of operation is called a bridge amplifier and has a better power efficiency, as compared to the class AB mode.

Due to its high power efficiency, wide frequency range and low distortion, the LT1490AIN8#PBF is a suitable device for applications that require high output power with low distortion. Additionally, its low stand-by current makes this device ideal for power applications.

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