AD8027AR-EBZ

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The AD8027AR-EBZ evaluation board is one of the few op amp evaluation boards that are currently available on the market. It gives designers the opportunity to quickly explore the features of the AD8027AR-EBZ op amp, and ensure that it is suitable for their applications. In this article, we will discuss the application field and working principle of the AD8027AR-EBZ evaluation board.

Application Field

The AD8027AR-EBZ evaluation board is a dual-channel op amp, with a low-power voltage feedback operational amplifier (op amp) contained in the AD8027AR-EBZ package. It is designed for a variety of applications, including high-frequency use and low-noise preamplifier designs. The board is also designed for general-purpose electronics such as signal conditioning and ac amplifier circuits.

The low supply current of the AD8027AR-EBZ makes it an ideal low-power op amp for battery-powered applications, with supply currents of 1.2mA maximum for the power and 1.2µA maximum for the shutdown.

In addition, the board has the ability to operate over a large supply voltage range of 2.7V to 12V, making it suitable for use in a large variety of applications, from single-supply to dual-supply operation.

Working Principle

The AD8027AR-EBZ evaluation board is based on an integrated, low-power, voltage feedback op amp that uses a complementary pair of MOSFETs to provide excellent gain, bandwidth, and drive capability. The board includes the op amp, output stage, and power supply bypass components. The board is also designed to provide greater stability than traditional op amps.

The op amp includes two power sources, namely the positive and negative supply lines. The negative supply line is often referred to as the “input common mode voltage”, which allows the op amp to optimize its performance with a given gain-bandwidth product. By using a negative supply line, the op amp can achieve high gains without suffering from stability or noise problems.

The output stage also provides excellent drive capability, featuring a low power-dissipation FET output stage that ensures that signals remain constant and unbiased even with large signal swings, and can support output drive current of up to 20mA.

Finally, to provide maximum stability, the board is equipped with a high-speed feedback loop, including a compensation capacitor and a low-power unity-gain amplifier. This ensures that the board can provide the maximum gain and best stability over the entire operating range, even in the presence of large output currents.

To conclude, the AD8027AR-EBZ evaluation board is an ideal low-power op amp for a variety of applications. It features an excellent gain-bandwidth product, low-power consumption, drive capability, and high-speed feedback loop to ensure maximum stability. This makes it an ideal choice for battery-powered electronics, signal conditioning, and ac amplifier applications.

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