AD812AR

Series:	--
Packaging:	Tube
Part Status:	Obsolete
Applications:	Current Feedback
Output Type:	--
Number of Circuits:	2
-3db Bandwidth:	145MHz
Slew Rate:	1600 V/µs
Current - Supply:	4.5mA
Current - Output / Channel:	50mA
Voltage - Supply, Single/Dual (±):	2.4 V ~ 36 V, ±1.2 V ~ 18 V
Mounting Type:	Surface Mount
Package / Case:	8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:	8-SOIC
Base Part Number:	AD812

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Introduction

Analog Devices\' AD812AR is a video amplifier and module that is at the leading edge of video technology. It is a single-pole, wide-range video amplifier module with a wide input bandwidth, low noise figure and high gain-bandwidth product that is capable of driving video outputs with a high signal-to-noise ratio. This amplifying module is designed for use in high-definition signal processing applications, and it is also ideal for use in analog-to-digital signal conversion applications.

Application Field

The AD812AR is designed for a variety of signal processing and signal conversion applications. It is well suited for use in high-definition video signal processing applications such as HDTV, HD satellite receivers, digital video recorders, and high-definition cameras. It is also suitable for use in other signal processing or signal conversion applications, such as monitors and projectors, medical imaging, industrial analog-to-digital conversion, and any other application that requires high signal-to-noise ratio and low distortion. Additionally, this module is well suited for applications where power supply rejection is required, as it has an on-chip tracking filter that minimizes the effects of power supply ripple. The AD812AR is able to process a wide range of video signals, including PAL, NTSC, and HDTV formats, while maintaining a low distortion level and low noise figure. In addition, it has a wide input bandwidth, low current consumption, and a high signal-to-noise ratio that are ideal for analog-to-digital signal conversion.

Working Principle

The AD812AR is composed of three stages: an input stage, an output stage, and a low pass filter. The input stage consists of a transimpedance amplifier, a series of control pins, and several resistors. The transimpedance amplifier is designed to convert the video signal into a current signal. The control pins are used to adjust the amplitude and shape of the signal, as well as its gain. The resistors are used to set the overall gain of the amplifier, as well as its bandwidth. The second stage is an output buffer, which amplifies and drives the signal to its destination. The output buffer is composed of several high-speed amplifier stages which are optimized for video signals. The output buffer is also equipped with several control pins, which can be used to adjust the gain and shape of the signal. The last stage is a low pass filter, which is used to reduce noise and distortion due to neighboring signals. The low pass filter is composed of an inductor and several capacitors, and its purpose is to filter out high frequency signals while still allowing the video signal to pass through.

Conclusion

The AD812AR is a versatile and powerful video amplifier and module that is ideal for a wide range of signal processing or signal conversion applications. Its wide input bandwidth, low noise figure, and high gain-bandwidth product make it well suited for high-definition signal processing or analog-to-digital signal conversion applications. Additionally, this module has an on-chip tracking filter, which minimizes the effects of power supply ripple. With its wide range of features, the AD812AR is an ideal choice for any application that requires a high signal-to-noise ratio and low distortion.

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