NJM2244D

Product Overview

• Category: Integrated Circuit (IC)
• Use: Amplifier
• Characteristics: Low noise, low distortion, high gain
• Package: Dual Inline Package (DIP)
• Essence: High-performance audio amplifier
• Packaging/Quantity: Available in reels of 2500 units

Specifications

• Supply Voltage: ±2.5V to ±18V
• Input Offset Voltage: 1mV (max)
• Input Bias Current: 100nA (max)
• Gain Bandwidth Product: 10MHz (typ)
• Slew Rate: 6V/µs (typ)
• Output Power: 500mW (typ)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The NJM2244D has a total of 8 pins arranged as follows:

```

---

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

Functional Features

• Low noise and distortion for high-quality audio amplification
• Wide gain bandwidth product for accurate signal reproduction
• High output power capability for driving various loads
• Wide supply voltage range for flexibility in different applications
• Stable operation over a wide temperature range

Advantages and Disadvantages

Advantages: - Low noise and distortion ensure high-fidelity audio reproduction - High gain bandwidth product allows accurate signal amplification - Versatile power supply range enables use in various systems - Stable operation across a wide temperature range ensures reliability

Disadvantages: - Limited output power compared to higher-power amplifiers - Requires external components for proper biasing and filtering

Working Principles

The NJM2244D is an operational amplifier designed specifically for audio amplification. It utilizes a differential input stage followed by a high-gain amplifier to provide accurate amplification of audio signals. The internal circuitry ensures low noise and distortion, resulting in high-quality sound reproduction.

Detailed Application Field Plans

The NJM2244D is commonly used in the following applications:

1. Audio amplifiers for consumer electronics such as televisions, radios, and portable speakers.
2. Musical instruments amplification systems, including guitar amplifiers and mixing consoles.
3. Public address (PA) systems for venues like auditoriums, stadiums, and conference halls.
4. Automotive audio systems, providing enhanced sound quality in vehicles.
5. Professional audio equipment, including studio monitors and sound reinforcement systems.

Detailed and Complete Alternative Models

1. LM386: Low voltage audio power amplifier with similar characteristics.
2. TDA7294: High-performance audio amplifier with higher output power capability.
3. NE5532: Dual operational amplifier suitable for audio applications.
4. MAX9744: Class D audio amplifier with integrated volume control.

These alternative models offer similar functionality and can be considered based on specific requirements and design constraints.

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