LM4782TA/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Audio Power Amplifier
• Characteristics: High-performance, stereo audio amplifier
• Package: TO-220-15
• Essence: Provides high-quality audio amplification for various applications
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on supplier

Specifications

• Power Supply Voltage: ±20V to ±84V
• Output Power: 60W per channel
• Total Harmonic Distortion: 0.03% (typical)
• Signal-to-Noise Ratio: 108dB (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The LM4782TA/NOPB has a total of 15 pins. The pin configuration is as follows:

1. Mute
2. Non-Inverting Input (Channel A)
3. Inverting Input (Channel A)
4. VEE (Negative Power Supply)
5. Output (Channel A)
6. VCC (Positive Power Supply)
7. Thermal Pad
8. Output (Channel B)
9. Inverting Input (Channel B)
10. Non-Inverting Input (Channel B)
11. Standby
12. Gain Select (Channel B)
13. Gain Select (Channel A)
14. Bypass Capacitor
15. Mute

Functional Features

• Dual-channel audio power amplifier
• High output power capability
• Low distortion and noise levels
• Wide operating voltage range
• Built-in thermal shutdown protection
• Short-circuit and over-voltage protection

Advantages and Disadvantages

Advantages: - High-quality audio amplification - Wide operating voltage range allows flexibility in power supply selection - Built-in protection features ensure safe operation - Low distortion and noise levels provide excellent audio fidelity

Disadvantages: - Requires external components for proper operation - Limited availability in certain markets

Working Principles

The LM4782TA/NOPB is a class AB audio power amplifier that utilizes a dual-channel configuration. It operates by amplifying the input audio signal received at the non-inverting and inverting inputs of each channel. The amplified signals are then combined and delivered to the respective output terminals.

The amplifier's gain can be adjusted using the gain select pins, allowing customization based on specific application requirements. Additionally, the device incorporates various protection mechanisms to safeguard against thermal overload, short-circuits, and over-voltage conditions.

Detailed Application Field Plans

The LM4782TA/NOPB finds applications in various audio systems, including:

1. Home theater systems
2. Stereo receivers
3. Professional audio equipment
4. Automotive audio systems
5. Portable audio devices

Its high output power capability, low distortion, and wide operating voltage range make it suitable for delivering high-quality audio amplification in these fields.

Detailed and Complete Alternative Models

1. TDA7294 - Audio Power Amplifier IC
2. STA540 - 4x13W Dual/Quad Power Amplifier
3. TPA3116D2 - 50W Stereo Class D Audio Amplifier

These alternative models offer similar functionality and can be considered as alternatives to the LM4782TA/NOPB based on specific requirements and availability.

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