AD8040AR-EBZ

Series:	--
Part Status:	Active
Lead Free Status / RoHS Status:	--
Channels per IC:	4 - Quad
Moisture Sensitivity Level (MSL):	--
Amplifier Type:	General Purpose
Output Type:	--
Slew Rate:	--
Voltage - Supply, Single/Dual (±):	--
Board Type:	Bare (Unpopulated)
Supplied Contents:	Board(s)
Utilized IC / Part:	14-SOIC Package
Base Part Number:	AD8040

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Introduction

The AD8040AR-EBZ is an evaluation board featuring a precision, low power operational amplifier (op amp). This board is designed to evaluate the performance of the AD8040AR, a wideband device with a video differential of 0.15 V/V and low noise performance. It is intended for use in high speed applications such as video amplifiers, cable equalizers, filters, and other active components.

Features and Applications

The AD8040AR-EBZ offers a number of features useful in evaluation and debugging, including an input-output R-F isolation guard ring, adjustable gain, and adjustable power supply ripple rejection. The board is small enough to fit into most benchtop equipment and its single sided design makes it simple to use and debug. The AD8040AR is ideal for a wide range of video and data communications applications, such as video signal conditioning and equalization in cable and satellite television systems, optical communications, high speed data conversion, and baseband signal processing. The amplifier also finds use in automotive audio systems and telecommunications.

Working Principle of the AD8040AR-EBZ

The AD8040AR-EBZ operates on the premise of equalizing and amplifying a video signal’s differential. Its operation relies on an open-loop gain configuration that takes advantage of the device’s high video bandwidth. The op amp’s differential inverted video amplifier stage amplifies the input signal, while an AC-coupled internal current to voltage converter provides low impedance output. The AD8040AR maintains excellent input-output isolation to reduce noise and distortion caused by interference in the signal path. The internal AC-coupled current to voltage converter enables the closed-loop gain of the amplifier to be controlled using internal feedback resistors, as well as externally by changing the bias level of the external resistors. This allows for adjustment of the amplifier’s gain over a wide range from 0 to 10 V/V, with a typical closed-loop voltage gain of 0.1 to 10 V/V. The AD8040AR-EBZ can achieve bandwidths of up to 50 MHz while maintaining an excellent 0.12 dB flatness over its entire range. This ensures signal clarity and a low noise floor even in high frequency applications.

Conclusion

The AD8040AR-EBZ is an excellent choice for evaluation and applications requiring video equalization and signal amplification. Its open-loop design provides superior isolation and dynamic range, while the internal AC-coupled current to voltage converter ensures that the gain can be precisely controlled for optimum performance. The amplifier’s small size and single sided layout make it easy to use and debug, while its wideband performance ensures clear, reliable signal transmission in high speed applications.

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