LM613IWMX

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Linear amplifiers are a class of amplifiers which produce visibly linear output for an input. Typically these amplifiers exhibit a much greater degree of linearity than other amplifiers, such as power amplifiers. This is done by carefully designing the amplifying elements, and controlling their current and voltage in order to ensure that their output is linear for a given input. In this article we will discuss the LM613IWMX application field and working principle.

Overview

The LM613IWMX is an ultra-low distortion linear amplifier. It is based on a class-D amplifier architecture and employs an integrator-based feedback loop which results in minimal distortion and maximum linearity. The LM613IWMX is designed to be used in a variety of applications which require a high degree of linearity. This includes audio, instrumentation, and communication systems. The amplifier is specifically designed to achieve very low distortion levels even when driving large loads and frequencies. The device is also capable of accepting a wide range of input voltages.

Features

The LM613IWMX has a host of features that make it suitable for a wide range of applications. Firstly, the device is capable of delivering up to 10W of continuous power output with a THD+N of -85dBc. The device also features a wide band frequency response of 5Hz – 200kHz and a low input noise floor of -90dBV. It also features a low power consumption of 2.5W and an input voltage range of 4V to 12V. In addition, the device also comes with a pin compatible evaluation board.

Working Principle

The LM613IWMX uses a feedback-based architecture in order to deliver its ultra-low distortion performance. The device takes an input signal and passes it through a pre-amplifier. This pre-amplifier features a medium-voltage gain stage and a low-voltage gain stage. The gain of the pre-amplifier is set using the external feedback pin. This signals is then fed to the output stage which features two parallel MOSFETs connected in a half-bridge configuration. The output of the half-bridge is fed back to the input of the pre-amplifier via an integrator. The integrator ensures that the output of the half-bridge is accurately reproduced at the pre-amplifier’s input. This gives the device a higher degree of linearity and reduces distortion. The output of the pre-amplifier is then routed to the final stage which is a voltage follower. The voltage follower buffers the output of the pre-amplifier and provides a low-impedance output.

Applications

The LM613IWMX is can be used in a variety of applications which require an ultra-low distortion linear amplifier. These applications include: audio systems, instrumentation systems, communication systems, and a variety of other applications. The device is specifically designed to deliver an ultra-low distortion performance even when driving large loads and frequencies. The device can also be used to drive low impedance loads, such as headphones. In addition, the device also features a wide band frequency response and a low power consumption. This makes it suitable for portable applications, as well as applications which require a high degree of linearity.

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