P0398NL

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Arrays

The P0398NL is an array of four loop-gain amplifiers designed for low-power, single-channel operation. It is optimized for small size, high performance, low cost and protection against starting current overloading. The array consists of four general purpose high gain amplifiers that are combined into a differential configuration for maximum performance. Each amplifier has an adjustable offset capability that can be adjusted with a pot or digital potentiometer to balance offsets at the base of the array. The amplifiers also have a common mode level that can be adjusted for optimizing flatness over the entire operating frequency range.

Signal Transformers

The P0398NL utilizes a transformer-coupled third-order low pass filter configuration to further improve signal processing efficiency. The transformer enables the power input stages of the array to achieve high performance and excellent impedance matching. The transformer is designed to reject out-of-band signals and operates at frequencies between 5 kHz and 20 MHz. It employs two 0.5 mm thick PCB layers that can easily be integrated into an array with minimum board space requirements. The transformer is designed to have an extremely low profile, making it suitable for tight arrays where space is at a premium. Additionally, the transformer\'s low profile ensures excellent thermal performance, resulting in improved stability and signal integrity.

Working Principle

The P0398NL array works by amplifying an input signal, typically from a microphone or other transducer, and processing that signal to produce a desired output. The output is usually a high quality signal, which can be used to drive audio components or other related applications. The amplifiers in the array are optimized for small size, low cost, and maximum performance. The differential configuration of the amplifiers maximizes the output signal and ensures that the signals received from all transducers are balanced and synchronized.

The amplifier is designed to work in combination with a transformer-coupled third-order low pass filter. The filter enables the array to focus on frequencies within the bandwidth of the power input stages of the array, rejecting out-of-band signals. Additionally, the filter can be adjusted to optimize flatness over the entire operating frequency range. Finally, the amplifier\'s adjustable offset capability and common mode level further improve signal integrity.

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