AD828AR-REEL7

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AD828AR-REEL7 application field and working principle

The AD828AR-REEL7 is a video amplifier and module designed by Analog Devices Inc. used in video signal acquisition and transmission operations. It is part of the company\'s linear amplifiers line, specifically within its video amplifiers and modules range. This product is able to improve and enhance analog video amplitude and clarity within a variety of systems.

Features and benefits

The AD828AR-REEL7 provides users with the tools and features necessary to properly amplify analog video signals in systems that require high precision. This device is able to reduce noise within the signal chain, thereby offering unparalleled signal integrity. Additionally, it modulates amplitude by providing higher dynamic range. This device is able to accept signals from both composite and S-video sources, further providing for more accurate reproduction.

The AD828AR-REEL7\'s performance benefits not only physical signals, but also digital ones via its bandwidth-limiting circuit. This feature provides double-shielding technology that in turn addresses the need of noise immunity optimization in digital signals. With its high-speed performance and low power consumption, this video amplifier provides international video standards compliance across different systems.

Applications

The AD828AR-REEL7 is primarily used in video acquisition and transmission systems. It can regulate signal amplitude for various forms of systems that contain both digital and analog signals, such as those found in broadcast equipment, DVD players, and similar consumer electronics. This device can also be used to offer standard compliance in varied consumer signal systems. Additionally, it can be put to use where noise reduction is a priority, such as in closed-circuit television (CCTV) monitoring.

Working principle

The AD828AR-REEL7 utilizes a video line driver which is composed of a video amplifier and a video interface IC. These amplifier ICs provide signal conditioning so that the video signals can be transmitted with stability, clarity, and minimum noise interference. The video amplifier is basically a differential OP amp with a gain bandwidth product of 1GHz and a slew rate of 1.6 V/µs. It also contains an internal frequency-compensation circuit which can be optimized.

The AD828AR-REEL7 is able to adjust the gain with its variable gain and distortion control knobs. The device is powered by dual power supplies that supply +/-7V to the amplifier. An external circuit is also included, which can be used to power the output and provide temperature compensation, thereby reducing temperature-dependent gain variations.

The device also contains an internal switch which can be used as a mute control. With the mute control activated, the amplifier output falls to 0V and the noise generation is greatly reduced. This feature can also be used to activate an external audio mute switch, thereby allowing the user to easily control the level and balance of the video signals.

Conclusion

The AD828AR-REEL7 is an innovative video amplifier and module designed by Analog Devices designed to meet the needs of video communication and image processing equipment. This device is a low-cost solution that provides users high performance and signal-to-noise ratio. By providing double-shielding of digital signals, this device provides noise immunity optimization as well as increased levels of flexibility. This device is able to offer international video standards compliance across different systems, and can easily be incorporated into broadcast equipment, DVD players, and other consumer electronics.

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