LM2904D

Product Overview

Category: Integrated Circuit (IC)

Use: Operational Amplifier

Characteristics: - Dual operational amplifier - Low power consumption - Wide supply voltage range - High input impedance - Output short-circuit protection - Low input bias current

Package: SOIC (Small Outline Integrated Circuit)

Essence: The LM2904D is a dual operational amplifier that provides high-performance amplification for various applications.

Packaging/Quantity: The LM2904D is typically sold in reels or tubes containing multiple units. The exact quantity depends on the manufacturer and distributor.

Specifications

The LM2904D has the following specifications:

• Supply Voltage Range: ±1.5V to ±15V
• Input Offset Voltage: 2mV (maximum)
• Input Bias Current: 45nA (maximum)
• Input Offset Current: 5nA (maximum)
• Gain Bandwidth Product: 1MHz (typical)
• Slew Rate: 0.3V/µs (typical)
• Common Mode Rejection Ratio: 70dB (typical)
• Operating Temperature Range: -40°C to +125°C

Pin Configuration

The LM2904D has a total of eight pins, which are assigned specific functions as follows:

1. Non-Inverting Input (Op-Amp 1)
2. Inverting Input (Op-Amp 1)
3. V- (Negative Power Supply)
4. V+ (Positive Power Supply)
5. Non-Inverting Input (Op-Amp 2)
6. Inverting Input (Op-Amp 2)
7. Output (Op-Amp 2)
8. Output (Op-Amp 1)

Functional Features

• Dual Op-Amp: The LM2904D contains two independent operational amplifiers in a single package, allowing for versatile circuit designs.
• Low Power Consumption: The IC is designed to operate with minimal power consumption, making it suitable for battery-powered applications.
• Wide Supply Voltage Range: The LM2904D can be powered by a wide range of supply voltages, providing flexibility in various electronic systems.
• High Input Impedance: The operational amplifiers have high input impedance, enabling them to interface with different signal sources.
• Output Short-Circuit Protection: The IC incorporates protection circuitry that prevents damage due to output short-circuits.

Advantages and Disadvantages

Advantages: - Dual op-amp configuration allows for more complex circuit designs. - Low power consumption extends battery life in portable devices. - Wide supply voltage range enhances compatibility with different power sources. - High input impedance enables interfacing with various signal sources. - Output short-circuit protection safeguards the IC from damage.

Disadvantages: - Limited gain bandwidth product compared to some other operational amplifiers. - Slew rate may not be sufficient for high-speed applications. - Common mode rejection ratio could be improved for better noise rejection.

Working Principles

The LM2904D operates based on the principles of operational amplifiers. It amplifies the difference between the voltages at its two input terminals and produces an output voltage proportional to this difference. The IC utilizes internal circuitry to achieve high gain, low distortion, and stability.

Detailed Application Field Plans

The LM2904D finds applications in various fields, including but not limited to: 1. Audio Amplification: The IC can be used in audio amplifiers to enhance weak audio signals. 2. Signal Conditioning: It is suitable for conditioning sensor signals before further processing. 3. Active Filters: The LM2904D can be employed in active filter circuits to shape frequency response. 4. Voltage Comparators: It can serve as a voltage comparator for comparing two input voltages. 5. Oscillators: The IC can be utilized in oscillator circuits to generate periodic waveforms.

Detailed and Complete Alternative Models

Some alternative models to the LM2904D include: - LM358 - TL072 - NE5532 - OP07 - MCP6002

These alternatives offer similar functionality and can be used as substitutes depending on specific requirements.

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