The NJM387DA is a low-noise dual preamplifier designed for audio applications, manufactured by New Japan Radio (NJR). It is specifically optimized for use in microphone preamplifiers and tape recorders, providing high gain and low noise performance. The device features a wide operating voltage range and is suitable for various audio equipment.

Applications:

• Microphone Preamplifiers: Amplifying the weak signal from microphones.
• Tape Recorders: Preamplification of audio signals in tape recording devices.
• Audio Mixers: Input stage amplification in audio mixing consoles.
• Sound Reinforcement Systems: Pre-amplification in PA systems.
• Audio Effects Units: Signal conditioning and amplification in effects processors.

Features:

• Dual Preamplifier: Contains two independent preamplifiers in a single package.
• Low Noise: Designed for low noise performance, critical for audio applications.
• High Gain: Provides significant amplification of audio signals.
• Wide Operating Voltage Range: Operates over a wide range of supply voltages.
• Internal Compensation: Simplifies circuit design and ensures stability.

Benefits:

• Improved Audio Quality: Low noise and high gain contribute to enhanced audio clarity.
• Reduced Component Count: Dual preamplifiers in a single package reduce component count and board space.
• Simplified Design: Internal compensation simplifies circuit design.
• Versatile Application: Suitable for a wide range of audio applications.

Additional Details:

The NJM387DA is typically available in a DIP (Dual In-line Package). It offers a high input impedance, suitable for various audio sources. The operating voltage ranges from 4V to 16V. The total harmonic distortion (THD) is usually very low. Detailed electrical characteristics and typical application circuits can be found in the product datasheet provided by New Japan Radio.