LM2902KAVQDRQ1

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The LM2902KAVQDRQ1 is a linear amplifier in the field of instrumentation, operational amplifiers, buffer amplifiers, etc. It has many different applications, ranging from signal conditioning to driving speakers, amplifying signals, to controlling current or voltage in devices such as voltage sources or resistors.

Description

The LM2902KAVQDRQ1 is a low-noise, low-offset IC amplifier, which is capable of delivering up to 12V of output voltage. It consists of two matched quiescent current outputs, three inputs, and an adjustable bias current. It provides high linearity and superior accuracy, making it suitable for a wide range of signal conditioning needs.

Features

• Low noise: 5 μVRMS, 0.01 μVRMS at 1kHz
• Low offset: 10 mV maximum
• Wide gain bandwidth: 80 kHz minimum
• High accuracy: 0.02%
• Wide temperature range: -40°C to +85°C
• Low power: 2.5mA typical
• High supply range: single supply 4V to 18V, dual supply ±2V to ±9V
• High output voltage swing: ±12V

Working Principle

The LM2902KAVQDRQ1 operates as an inverting amplifier. Its input stage consists of multiple differential pairs, each of which is composed of two transistors. This setup provides high input impedance and low output impedance, making the amplifier very responsive to small input signals.

The differential inputs are then connected to an output stage, which consists of a transistor and an adjustable resistor. This output stage allows the amplifier to output a higher voltage than the input, and the resistor can be used to adjust the gain of the amplifier.

Finally, a bias current is used to adjust the quiescent current of the LM2902KAVQDRQ1 system. This helps to ensure that the output voltage remains stable over a wide range of supply voltages and temperatures.

Applications

Due to the high accuracy and low noise of the LM2902KAVQDRQ1, it can be used in a wide range of applications. It is particularly useful in signal conditioning applications, where it can be used to amplify signals, drive speakers, or control current and voltage in devices like voltage sources or resistors.

It is also well suited for use in portable devices, such as mobile phones and tablets, as it requires very low power to operate and has a wide temperature range. Additionally, its low offset, low noise, and high linearity make it suitable for use in medical applications, where accuracy is of the utmost importance.

Conclusion

The LM2902KAVQDRQ1 is a linear amplifier in the field of instrumentation, operational amplifiers, buffer amplifiers, and many other areas. Its low noise, low offset, and high linearity make it suitable for a variety of applications, from signal conditioning to driving speakers and controlling current and voltage.

Furthermore, it has a wide temperature range and can operate on low power supplies, making it ideal for portable applications. For these reasons, the LM2902KAVQDRQ1 is a valuable tool for those working in fields where accuracy and precision are essential.

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