AD812ARZ

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The AD812ARZ is a high performance, video amplifier, available in a variety of forms, including a through-hole form, a surface-mount form, and a Quad-Flat Non (QFN) package. It is designed for use in applications that require both high-level amplification and low-level distortion. It is also suitable for use in video surveillance applications where moderate signal-to-noise ratios are acceptable and low-cost is of primary importance.

The AD812ARZ video amplifier is a linear, high-level amplifier with excellent large-signal gain and bandwidth characteristics. Its wide bandwidth allows it to be used to amplify a variety of video sources, including NTSC and PAL, as well as HDTV sources. It has a low distortion level, allowing it to reproduce accurate video signals without significant signal degradation. Its low noise level ensures that noise generated by the amplifier does not interfere with the video signal.

The AD812ARZ video amplifier is a single-chip solution, providing both the amplifier, as well as power and logic control circuitry integrated on a single, compact chip. It is powered by a single 5V supply, and provides an operating voltage range of +/-12V. It also offers an integrated temperature control system to maintain amplifier linearity and reduce distortion. Output current capabilities of up to 2.2A allow it to drive large loads without significant signal degradation.

The circuit topology of the AD812ARZ uses two basic amplifier stages — Class AB1 and Class A. Class AB1 is used as the high-level amplifier stage, providing excellent gain and bandwidth. Class A is used as the low-level amplifier stage, providing low-level linear amplification with minimal distortion. The output stages of the amplifier are also designed for low-level distortion, ensuring accurate signal reproduction.

The AD812ARZ video amplifier consists of a single-stage differential input amplifier, followed by a high-level Class AB1 amplifier stage and a low-level Class A stage. An optional second differential input stage can be used for higher gain applications. The amplifier includes integrated power and logic control circuitry, providing for simplified system integration.

The AD812ARZ video amplifier is a high-performance solution for applications that require low distortion and wide bandwidth. Its single-chip design makes it an ideal solution for use in video surveillance systems, allowing easy integration while providing excellent signal fidelity. With its wide bandwidth and low distortion levels, it is soft to meet a variety of high-level video applications.

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