LMH6622 MDC

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The LMH6622 is a dual MDC (Multi Dynamic Drive Controller) amplifier for applications that require high linearity, low power consumption, and low distortion. In this article, we\'ll discuss the application fields and working principle of the LMH6622.

Application Fields

The LMH6622 is ideal for audio, video, and high-speed communication systems such as mobile phones, PDAs, digital TVs, wireless remote controls, and digital cameras. Its low-voltage operation, wide bandwidth, and low distortion makes it suitable for voice and video applications.

It is also ideal for medical applications such as medical imaging, ultrasound imaging, and surgical instruments. Its low power consumption, wide gain range, and wide temperature range make it suitable for portable medical devices.

It is also suitable for automotive applications such as head unit speakers, rear view mirror monitors, rear speaker systems, and engine control systems. Its fast response time, low distortion, and low power consumption make it ideal for these applications.

Working Principle

The LMH6622 is a dual MDC amplifier that consists of two sections: an amplifier and a controller. The amplifier is a low noise, wide bandwidth, wide gain range, unity gain stable, low distortion, power efficient, and fast response amplifier. The amplifier has a gain range of 10 dB to 70 dB.

The controller consists of a driver, an amplifier, and a feedback loop. The driver — which is an operational amplifier — amplifies the output of the amplifier and supplies the feedback signal to the amplifier’s input, thus creating the negative feedback loop. The feedback loop helps to generate a wide range of gains for the amplifier and to keep the distortion low.

The gain of the amplifier is adjusted by the gain setting pins, which connect to the top terminals of the operational amplifier. The gain is set by the voltage applied to the gain setting pins which can be anywhere from 0.5V to 5V.

The LMH6622 also includes frequency noise cancellation circuitry that allows it to reduce the amount of noise in its output. This is accomplished by passing the input signal through a series of high frequency filters that filter out any noise present in the signal.

The LMH6622 has a wide supply voltage range of 3V to 15V, allowing it to be used in a variety of applications. It is available in 8-pin MSOP and SOIC packages, making it suitable for use in a variety of environments.

In summary, the LMH6622 is a dual MDC amplifier with a wide gain range, low power consumption, and low distortion. Its wide supply voltage range, wide bandwith, and low noise make it suitable for audio, video, and high-speed communication systems, medical applications, and automotive applications.

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