LMH6522EVAL/NOPB Development Boards, Kits, Programmers

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Evaluation boards are designed to verify the performance of certain operational amplifiers before they are released to the public, particularly those that are part of a larger system or a complex product. The LMH6522EVAL/NOPB is one such evaluation board, intended for use in transistor-based amplifier designs while testing performance in the audio frequency range. In this article we will discuss the application field and working principle of this device so that designers can better understand its capabilities.

Applications

The LMH6522EVAL/NOPB evaluation board is especially useful in fields such as automotive audio and non-audio applications, high-end consumer audio, and advanced audio processing. Its transistor-based architecture makes it suitable for use in applications in which high speed, high output power, and excellent noise performance are required. Specifically, the board has been tested for use in automotive-grade full-range digital audio applications, advanced audio processing, audio amplifiers for satellite radio, in-vehicle infotainment, and more. The board is also ideal for product validation in consumer audio systems, due to its low noise and distortion performance.

Working Principle

The LMH6522EVAL/NOPB evaluation board uses a transistor-based architecture to deliver both high speed and excellent noise performance. The board typically operates with a single-ended input stage, where it uses voltage-controlled current sources to amplify an input signal into an output signal. The voltage-controlled current sources are comprised of two transistors in source-follower configuration. The transistors are biased so that the output is approximately equal to the input, and the transistors are controlled by voltages that are generated by operational amplifiers on the board. This ensures that the signal is accurately and reliably amplified.

The transistor-based architecture used by the LMH6522EVAL/NOPB also provides excellent noise performance. Noise is typically generated when current is switched from one transistor to another, a process that can be minimized with the appropriate bias voltages. The evaluation board uses feedback circuits with transistors in source-follower configuration to reduce such noise, ensuring a clean output signal with minimal distortion.

Conclusion

The LMH6522EVAL/NOPB is an evaluation board designed for transistor-based amplifier designs in the audio frequency range. It is suitable for use in applications such as automotive audio and non-audio applications, high-end consumer audio, and advanced audio processing. The board uses a transistor-based architecture to provide both high speed and excellent noise performance. The board’s feedback circuits also ensure a clean output signal with minimal distortion. With its versatility and reliable performance, the LMH6522EVAL/NOPB is a reliable tool for product validation for audio systems.

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