LMH6645MA

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LMH6645MA Application Field and Working Principle

The LMH6645MA is a highly versatile dual-differential video amplifier available in space-saving 16-pin QSOP package. This product is specially developed for HDTV systems and can handle high-bandwidth signals such as 480p, 1080i, or 1080p. It also has low input noise, high common-mode rejection, and low harmonic distortion.

This video amplifier can be primarily used in studio and professional broadcast applications, home cinema designs, and video-driven transportation systems. It features wide common-mode voltage range, low supply current, and single-supply operation. These features make it ideal for applications such as line drivers, video distribution networks, video format converters, and analog-to-digital converters.

The LMH6645MA is a linear amplifier specially designed for professional video and broadcast applications. It provides high bandwidth, low distortion, and reliable performance. The device includes two individual differential amplifiers that allow for the amplification of simultaneous video signals in one device. The main elements of this system are the differential amplifiers, the power supply, and the output buffer.

Differential Amplifiers

The differential amplifiers in the LMH6645MA are designed to provide high gain with low noise operation, thus making it suitable for wideband RF signals. These differential amplifiers have high common-mode rejection, low harmonic distortion and low crosstalk, making them ideal for professional video and broadcast applications. The differential amplifiers have high input impedance and low input offset voltage, making them suitable for driving large capacitive loads, such as those presented by long cables.

Power Supply

The LMH6645MA requires a single supply voltage from 5V to 12V and features low supply current requirements. The device is designed to operate over a wide temperature range and is protected against transient voltage events.

Output Buffer

The LMH6645MA features an output buffer that is designed to provide low noise and low distortion performance. This output buffer can drive video signals such as HDTV, YCbCr, or RGB formats. It also offers low distortion and low output impedance for driving long cables.

Conclusion

The LMH6645MA is a versatile, high-performance differential video amplifier that is designed for a variety of professional broadcast and HDTV applications. It offers low input noise and low distortion as well as wide common-mode voltage range and single-supply operation. This device is ideal for applications such as line drivers, video distribution networks, video format converters, and analog-to-digital converters.

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