MAX9546ESA+T

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The MAX9546ESA+T is a video amplifier and module designed to drive highly capacitive loads such as RGB or Y/C video lines. It operates with a single +5V or ±5V supply and provides low distortion, wide dynamic range and very wide bandwidth performance. It also features excellent power efficiency and low power consumption. This product is ideal for driving RGB or Y/C TV distribution networks and display lines.

Application Field

The MAX9546ESA+T is a versatile video amplifier that is ideal for driving RGB or Y/C video lines in the following applications:

• Cable TV Headends and Set Top Boxes
• Home theatre and audio/video distribution amplifiers
• RGB/Y/C distribution amplifiers
• Video and LCD/LED monitors
• TV and projection displays

This device is also capable of driving a wide range of loads, from 75pF to 470pF, making it suitable for a variety of applications.

Working Principle

The MAX9546ESA+T utilizes a wideband, externally compensated transconductance amplifier topology to produce high slew rates and minimal distortion, with a flat frequency response over the full −3dB bandwidth of the device. The MAX9546ESA+T provides high gain, low output impedance, and low noise at the full output voltage swing of the device.

The device provides an adjustable current source to charge the output node before the signal voltage is applied. This circuit prevents output transients in the presence of high capacitive loads.

The common-mode input voltage range extends beyond the rails, providing excellent headroom and the ability to work with large signal swings. The output is clamped to ≤13V and non-inverting, preventing the video signal from clipping, even at the maximum output swing. It also features a low-offset adjustable current source, which facilitates precise control of the output quiescent current.

The MAX9546ESA+T is a versatile amplifier that is suitable for a variety of applications. It offers high speed performance, low noise, and low power consumption, making it an ideal choice for driving RGB or Y/C video lines.

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