NJM084D

Product Overview

• Category: Integrated Circuit (IC)
• Use: Amplifier
• Characteristics: Low noise, low distortion, high gain
• Package: Dual in-line package (DIP)
• Essence: Operational amplifier
• Packaging/Quantity: Available in tubes of 25 units

Specifications

• Supply Voltage: ±15V
• Input Offset Voltage: 2mV max
• Input Bias Current: 50nA max
• Input Resistance: 5MΩ min
• Gain Bandwidth Product: 1MHz typ
• Slew Rate: 0.3V/µs typ
• Output Voltage Swing: ±12V typ
• Quiescent Current: 1.7mA typ

Detailed Pin Configuration

The NJM084D has a total of 8 pins arranged as follows:

```

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| | --| V+ V- |-- --| IN+ IN- |-- --| OUT |-- --| NC |-- --| VCC+ VCC- |-- |___________| ```

1. V+: Positive power supply pin
2. V-: Negative power supply pin
3. IN+: Non-inverting input pin
4. IN-: Inverting input pin
5. OUT: Output pin
6. NC: No connection pin
7. VCC+: Positive power supply pin for internal circuitry
8. VCC-: Negative power supply pin for internal circuitry

Functional Features

• Low noise and low distortion amplification
• High voltage gain
• Wide bandwidth
• Stable operation over a wide temperature range
• Internal frequency compensation
• Short-circuit protection

Advantages and Disadvantages

Advantages

• Low noise and distortion ensure high-quality audio amplification
• High gain allows for amplification of weak signals
• Wide bandwidth enables accurate reproduction of high-frequency signals
• Stable operation in various environmental conditions
• Internal frequency compensation simplifies circuit design
• Short-circuit protection prevents damage to the amplifier

Disadvantages

• Limited output voltage swing compared to some other amplifiers
• Relatively higher quiescent current consumption

Working Principles

The NJM084D is an operational amplifier that amplifies small input signals with low noise and distortion. It operates by taking the difference between the voltages at its non-inverting (IN+) and inverting (IN-) input pins, and amplifying this difference by a high gain factor. The amplified signal is then available at the output pin (OUT). The amplifier requires both positive and negative power supplies (V+ and V-) to operate.

Detailed Application Field Plans

The NJM084D is commonly used in various audio applications, such as:

1. Audio amplifiers for home stereo systems
2. Musical instrument amplifiers
3. Public address systems
4. Headphone amplifiers
5. Microphone preamplifiers
6. Active filters
7. Tone control circuits

Detailed and Complete Alternative Models

1. LM324: Quad operational amplifier with similar characteristics
2. TL084: JFET-input operational amplifier with similar performance
3. NE5532: Dual operational amplifier with low noise and high gain
4. AD712: Precision operational amplifier with low offset voltage

These alternative models offer similar functionality and can be used as substitutes for the NJM084D in various applications.

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