INA134UAE4

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INA134UAE4 Application Field and Working Principle

The INA134UAE4 is a high performance, low noise, differential-input amplifier designed specifically for microphone and balanced line applications. This amplifier offers low distortion, high slew rate, low input-bias current, low-noise current and wide bandwidth. It is well suited for use in consumer and professional audio applications.

Applications

The INA134UAE4 is ideal for use in consumer and professional audio applications that require high-performance, low-noise, differential-input amplification. Typical applications include microphone preamplifiers, power amplifiers, high-performance AV receivers, active loud speakers, sound cards, and professional audio equipment.

Features

• Low-distortion amplifier with a THD+N of 0.0003%.
• Wide bandwidth performance of up to 5 MHz – making it suitable for high fidelity audio applications.
• Low input bias current.
• Low noise current.
• Low input offset voltage.
• High slew rate.
• Surge current protected outputs.

Working Principle

The INA134UAE4 is a fully differential amplifier designed to amplify low-level signals from audio sources with high fidelity. It has two inputs (A and B) and two outputs (OP and ON). Each of the two inputs is connected to an inverting amplifier stage which is followed by a filtering stage. The signal from the filter is then amplified by the main amplifier stage. The signal from this main amplifier stage is then sent to the two outputs which are connected to the output transistors. The output transistors are then responsible for driving the audio signal to the next stage.

The INA134UAE4 is designed to be operated using single-supply power with a supply voltage of 5V. This design allows the amplifier to achieve high fidelity, low noise performance. The device also features surge current protection on the output transistors, which helps to ensure that the amplifier operates in a safe manner. Additionally, the device includes a thermal protection circuit which shuts the amplifier off in the event of an over-temperature condition.

Conclusion

The INA134UAE4 is a high performance, low noise, differential-input amplifier designed specifically for microphone and balanced line applications. This amplifier offers low distortion, high slew rate, low input-bias current, low-noise current and wide bandwidth. These features make the INA134UAE4 the perfect choice for use in professional and consumer audio applications including microphone preamplifiers, power amplifiers, AV receivers, active loud speakers, sound cards, and professional audio equipment.

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