NJM2135M

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Amplifier
• Characteristics: High-quality sound reproduction, low distortion, compact size
• Package: DIP (Dual In-line Package)
• Essence: Monolithic Power Amplifier
• Packaging/Quantity: Tape and Reel, 1000 units per reel

Specifications

• Power Supply Voltage: ±4V to ±18V
• Output Power: 1.2W (typical) at 8Ω, 10% THD+N
• Total Harmonic Distortion + Noise: 0.08% (typical) at 1kHz, 0.5W, 8Ω
• Input Sensitivity: 150mV (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The NJM2135M has a total of 8 pins arranged as follows:

```

---

| | --| VCC OUT|-- Pin 1: Power Supply Voltage (+) --| GND NC |-- Pin 2: Ground --| IN- NC |-- Pin 3: Negative Input --| IN+ NC |-- Pin 4: Positive Input --| NC NC |-- Pin 5: Not Connected --| NC NC |-- Pin 6: Not Connected --| NC NC |-- Pin 7: Not Connected --| GND VCC|-- Pin 8: Power Supply Voltage (-) |___________| ```

Functional Features

• High-quality audio amplification with low distortion
• Wide operating voltage range for flexibility in power supply selection
• Compact size allows for space-saving designs
• Internal thermal shutdown protection to prevent overheating

Advantages and Disadvantages

Advantages: - High-quality sound reproduction - Low distortion levels - Compact size for space-saving designs - Wide operating voltage range

Disadvantages: - Limited output power compared to higher wattage amplifiers - Not suitable for high-power audio applications

Working Principles

The NJM2135M is a monolithic power amplifier that utilizes a class AB amplifier configuration. It operates by amplifying the input audio signal using a combination of NPN and PNP transistors. The amplified signal is then delivered to the output terminal, providing high-quality audio reproduction with low distortion.

Detailed Application Field Plans

The NJM2135M is commonly used in various audio applications, including:

1. Portable audio devices such as MP3 players and smartphones
2. Personal computer audio systems
3. Home theater systems
4. Automotive audio systems
5. Communication devices like two-way radios

Detailed and Complete Alternative Models

1. LM386: Low Voltage Audio Power Amplifier
2. TDA7052: 1W BTL Mono Audio Amplifier
3. MAX9744: 20W Stereo Class D Audio Power Amplifier
4. TPA3116D2: 50W Stereo Class D Audio Amplifier

These alternative models offer different power outputs and features, allowing designers to choose the most suitable amplifier for their specific application requirements.

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