NJR Corporation/NJRC
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NJM386D
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NJM386D

Product Overview

  • Category: Integrated Circuit (IC)
  • Use: Audio amplifier
  • Characteristics: Low voltage, low power consumption, small package size
  • Package: DIP-8 (Dual In-line Package with 8 pins)
  • Essence: Single-channel audio amplifier
  • Packaging/Quantity: Available in reels of 2,500 units

Specifications

  • Supply Voltage: 4V to 12V
  • Output Power: 1W
  • Total Harmonic Distortion: 0.2% (at 1kHz, 0.5W)
  • Input Resistance: 50kΩ
  • Voltage Gain: 46dB (typical)

Detailed Pin Configuration

The NJM386D has a total of 8 pins:

  1. Gain Control Pin (GAIN): Sets the voltage gain of the amplifier.
  2. Non-Inverting Input Pin (IN+): Connects to the audio input source.
  3. Inverting Input Pin (IN-): Connects to the audio input source.
  4. Ground Pin (GND): Connected to the ground reference.
  5. Output Pin (OUT): Provides the amplified audio signal.
  6. Bypass Capacitor Pin (BY): Connects an external bypass capacitor for stability.
  7. Supply Voltage Pin (V+): Connects to the positive supply voltage.
  8. Supply Voltage Pin (V-): Connects to the negative supply voltage.

Functional Features

  • Low voltage operation allows for battery-powered applications.
  • Low power consumption extends battery life.
  • Small package size enables compact designs.
  • Suitable for portable audio devices and low-power audio amplification.

Advantages and Disadvantages

Advantages: - Low voltage operation - Low power consumption - Small package size - Suitable for battery-powered applications

Disadvantages: - Limited output power (1W) - Higher total harmonic distortion compared to higher-power amplifiers

Working Principles

The NJM386D is a single-channel audio amplifier that operates on a low supply voltage. It utilizes internal circuitry to amplify the audio signal received at the input pins. The gain of the amplifier can be adjusted using the Gain Control pin. The amplified audio signal is then available at the output pin.

Detailed Application Field Plans

The NJM386D is commonly used in various audio applications, including:

  1. Portable audio devices such as MP3 players and smartphones.
  2. Battery-powered audio systems.
  3. Low-power audio amplification in small speakers or headphones.
  4. Educational electronics projects involving audio amplification.

Detailed and Complete Alternative Models

Some alternative models to the NJM386D include:

  1. LM386: Similar low-power audio amplifier IC with different packaging options.
  2. TDA2822: Dual-channel audio amplifier IC with higher output power.
  3. MAX9814: Low-power audio amplifier IC with built-in microphone preamplifier.

These alternative models offer different features and specifications, providing flexibility for various audio amplification requirements.

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10 pirs û bersivên hevpar ên têkildarî sepana NJM386D di çareseriyên teknîkî de navnîş bikin

Sure! Here are 10 common questions and answers related to the application of NJM386D in technical solutions:

  1. Q: What is NJM386D? A: NJM386D is a low-power audio amplifier integrated circuit (IC) commonly used in various electronic applications.

  2. Q: What is the maximum voltage supply for NJM386D? A: The maximum voltage supply for NJM386D is typically around 12 volts.

  3. Q: Can NJM386D be used as a headphone amplifier? A: Yes, NJM386D can be used as a headphone amplifier by connecting the headphone directly to the output pin of the IC.

  4. Q: How much power can NJM386D deliver to a speaker? A: NJM386D can deliver up to 1 watt of power to a speaker, depending on the input voltage and speaker impedance.

  5. Q: Is NJM386D suitable for battery-powered applications? A: Yes, NJM386D is well-suited for battery-powered applications due to its low power consumption.

  6. Q: Can NJM386D be used in audio signal amplification circuits? A: Absolutely, NJM386D is commonly used in audio signal amplification circuits, such as in portable radios or small speakers.

  7. Q: Does NJM386D require external components for operation? A: Yes, NJM386D requires a few external components like resistors, capacitors, and a potentiometer for proper operation.

  8. Q: What is the typical gain range of NJM386D? A: The typical gain range of NJM386D is from 20 to 200, which can be adjusted using an external resistor.

  9. Q: Can NJM386D be used in stereo applications? A: No, NJM386D is a mono audio amplifier and cannot be directly used for stereo applications. However, two ICs can be used for stereo amplification.

  10. Q: Are there any recommended PCB layout guidelines for NJM386D? A: Yes, it is recommended to keep the input and output traces short, use proper decoupling capacitors, and minimize noise sources near the IC for optimal performance.

I hope these questions and answers help! Let me know if you have any more queries.