NJM2204AD

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Amplifier
• Characteristics: Low noise, high output power, compact size
• Package: Dual Inline Package (DIP)
• Essence: The NJM2204AD is a high-performance audio amplifier IC designed for various audio applications.
• Packaging/Quantity: Available in reels of 2,500 units per reel.

Specifications

• Operating Voltage: 4.5V to 15V
• Output Power: 1.8W (typical) at 9V supply voltage and 8Ω load
• Total Harmonic Distortion: 0.08% (typical) at 1kHz and 1W output power
• Input Resistance: 100kΩ (typical)
• Gain: 26dB (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The NJM2204AD has a total of 8 pins arranged as follows:

```

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| | --| VCC OUT|-- --| IN- GND|-- --| IN+ GND|-- --| SHUTDOWN |-- --| BTL |-- --| GND VEE|-- |___________| ```

1. VCC: Positive power supply pin
2. OUT: Output pin
3. IN-: Negative input pin
4. IN+: Positive input pin
5. SHUTDOWN: Shutdown control pin
6. BTL: Bridge-Tied Load mode selection pin
7. GND: Ground pin
8. VEE: Negative power supply pin

Functional Features

• Low noise operation for high-quality audio reproduction
• High output power capability for driving various speakers
• Shutdown control feature for power-saving applications
• Bridge-Tied Load (BTL) mode for increased power efficiency

Advantages and Disadvantages

Advantages: - Low noise operation ensures clear audio output - Compact size allows for space-efficient designs - High output power enables driving a wide range of speakers - Shutdown control feature helps in power-saving applications

Disadvantages: - Limited output power compared to higher wattage amplifiers - Requires external power supply for operation

Working Principles

The NJM2204AD is a class AB audio amplifier that amplifies low-level audio signals to a higher power level suitable for driving speakers. It operates by receiving an input audio signal through the IN+ and IN- pins, which is then amplified and delivered to the OUT pin. The amplifier's gain can be adjusted using external components connected to the IN+ and IN- pins.

Detailed Application Field Plans

The NJM2204AD is commonly used in various audio applications, including:

1. Portable audio devices: Provides amplification for headphones or small speakers.
2. Automotive audio systems: Amplifies audio signals for car speakers.
3. Home audio systems: Drives speakers in stereo systems or multimedia setups.
4. Communication devices: Enhances audio output in intercoms or two-way radios.

Detailed and Complete Alternative Models

1. LM386: Low voltage audio power amplifier with similar specifications.
2. TDA7265: Dual bridge audio amplifier IC with higher output power.
3. MAX9744: Class D audio amplifier with integrated volume control.

These alternative models offer different features and performance characteristics, providing options based on specific application requirements.

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