AD8223BRMZ-RL

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The AD8223BRMZ-RL is a low noise, high linearity, precision, small signal amplifier. This device is part of the Linear family of instrumentation OP Amps and is an ideal solution for a variety of differential or single end signal processing applications. This article aims to explain the working principle of the AD8223BRMZ-RL, as well as its application field.

Features and Benefits

The AD8223BRMZ-RL is a low voltage, low power, low noise amplifier. It offers excellent noise performance, with a 0.9 nV/√Hz input referred noise at 1 kHz. It also has a high linearity, with a typical differential linearity error of 0.5 dB. Additionally, the AD8223BRMZ-RL has a low input offset voltage of 0.8 mV and a low input bias current of 50 pA. This makes it an ideal amplifier for single ended or differential input applications.

Applications

The AD8223BRMZ-RL is a versatile amplifier that can be used for many different applications. It is ideal for low noise preamplifier design in a wide range of voltage gain applications. It is also well suited for single ended or differential input applications. Additionally, it is well suited for low back-to-back gain settings, where stable gain can be maintained from a single supply without offsets.

The amplifier is also suited for several low frequency applications, such as biomedical instrumentation, low frequency audio preamplification, bio-potential sensing, data acquisition systems and measuring tools.

Working Principle

The working principle of the AD8223BRMZ-RL is a two-stage differential amplifier. The first stage is a differential amplifier, with a low noise input referred noise of 0.9nV/√Hz. This stage also provides a high input impedance and a low output impedance. The second stage is an inverting amplifier, which provides gain and allows the input and output signals to be inverted at the same time.

The output of the amplifier is DC-coupled, with the capability to drive up to 100 mA. It can accept an input common-mode voltage range from -2.2 V to +4.4 V, with a maximum differential input voltage of 5 V. It also has a low input offset voltage of 0.8mV and a low input bias current of 50 pA.

Conclusion

The AD8223BRMZ-RL is a low voltage, low power, low noise amplifier. It offers excellent noise performance and high linearity. It is an ideal amplifier for small signal and low frequency applications, such as preamplification, data acquisition systems and measuring tools. The working principle is a two-stage differential amplifier, providing gain, low input impedance and low output impedance.

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