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LM4766T/NOPB
Product Overview
Category: Integrated Circuit (IC)
Use: Audio Power Amplifier
Characteristics: - Dual-channel audio amplifier - High-performance and high-fidelity audio reproduction - Suitable for stereo systems, home theaters, and professional audio applications
Package: TO-220-15
Essence: The LM4766T/NOPB is a dual-channel audio power amplifier IC designed to deliver high-quality audio amplification with low distortion and noise.
Packaging/Quantity: The LM4766T/NOPB is typically sold in reels or tubes containing 50 units per package.
Specifications
- Supply Voltage Range: ±20V to ±84V
- Output Power: 40W per channel (8Ω load, THD+N = 0.1%)
- Total Harmonic Distortion + Noise (THD+N): 0.1% (typical)
- Signal-to-Noise Ratio (SNR): 95dB (typical)
- Input Impedance: 22kΩ
- Operating Temperature Range: -40°C to +85°C
Pin Configuration
The LM4766T/NOPB has a 15-pin configuration as follows:
Pin 1: Non-Inverting Input Channel A
Pin 2: Inverting Input Channel A
Pin 3: VEE (Negative Power Supply)
Pin 4: Non-Inverting Input Channel B
Pin 5: Inverting Input Channel B
Pin 6: VCC (Positive Power Supply)
Pin 7: Mute Control
Pin 8: Standby Control
Pin 9: Thermal Shutdown
Pin 10: Output Channel B
Pin 11: Output Channel A
Pin 12: GND (Ground)
Pin 13: Bootstrap Capacitor Channel B
Pin 14: Bootstrap Capacitor Channel A
Pin 15: VCC (Positive Power Supply)
Functional Features
- Dual-channel architecture for stereo audio amplification
- High output power capability for driving speakers efficiently
- Low distortion and noise for high-fidelity audio reproduction
- Mute and standby control for power management
- Thermal shutdown protection to prevent overheating
Advantages and Disadvantages
Advantages: - High-quality audio amplification with low distortion - Suitable for various audio applications - Efficient power management features - Thermal shutdown protection ensures safety
Disadvantages: - Requires external components for proper operation - Limited output power compared to some higher-powered amplifiers
Working Principles
The LM4766T/NOPB operates as a class AB dual-channel audio power amplifier. It amplifies the input audio signals received from the non-inverting and inverting inputs of each channel, producing amplified output signals that drive the connected speakers. The amplifier's internal circuitry ensures low distortion and noise levels, resulting in high-fidelity audio reproduction.
Detailed Application Field Plans
The LM4766T/NOPB is commonly used in the following audio applications: 1. Stereo systems 2. Home theaters 3. Professional audio equipment 4. Audio amplification for multimedia devices 5. Sound reinforcement systems
Detailed and Complete Alternative Models
Some alternative models to the LM4766T/NOPB include: - TDA7294: Similar dual-channel audio power amplifier IC with comparable specifications. - STA540: Dual-channel audio power amplifier IC suitable for low-power applications. - TPA3116D2: Class D audio amplifier IC with high efficiency and compact size.
These alternative models offer different features and performance characteristics, allowing users to choose based on their specific requirements.
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10 domande e risposte comuni relative all'applicazione di LM4766T/NOPB nelle soluzioni tecniche
Q: What is the maximum power output of LM4766T/NOPB? A: The LM4766T/NOPB has a maximum power output of 40W per channel into an 8-ohm load.
Q: What is the recommended power supply voltage for LM4766T/NOPB? A: The recommended power supply voltage for LM4766T/NOPB is ±20V.
Q: Can LM4766T/NOPB be used in bridge-tied load (BTL) configuration? A: Yes, LM4766T/NOPB can be used in bridge-tied load (BTL) configuration to achieve higher power output.
Q: What is the typical input impedance of LM4766T/NOPB? A: The typical input impedance of LM4766T/NOPB is 150kΩ.
Q: Is LM4766T/NOPB suitable for audio amplifier applications? A: Yes, LM4766T/NOPB is specifically designed for audio amplifier applications.
Q: Does LM4766T/NOPB require external heat sinking? A: Yes, LM4766T/NOPB requires external heat sinking to dissipate heat effectively.
Q: What is the total harmonic distortion (THD) of LM4766T/NOPB? A: The total harmonic distortion (THD) of LM4766T/NOPB is typically 0.06% at 1kHz and 10W output.
Q: Can LM4766T/NOPB operate with a single power supply? A: No, LM4766T/NOPB requires a dual power supply for proper operation.
Q: What are the typical applications of LM4766T/NOPB? A: Typical applications of LM4766T/NOPB include stereo systems, active speakers, and multimedia speakers.
Q: Is LM4766T/NOPB protected against short circuits and thermal overload? A: Yes, LM4766T/NOPB features short-circuit and thermal overload protection for reliable operation.