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LM4819MX/NOPB
Product Overview
Category: Integrated Circuit (IC)
Use: Audio Amplifier
Characteristics: - Mono Class AB audio power amplifier - Low quiescent current consumption - Wide supply voltage range - Small package size - High output power capability
Package: SOP-8 (Small Outline Package)
Essence: The LM4819MX/NOPB is a mono audio power amplifier IC designed for low-power applications. It provides high-quality audio amplification with low distortion and low power consumption.
Packaging/Quantity: The LM4819MX/NOPB is available in tape and reel packaging, with 2500 units per reel.
Specifications
- Supply Voltage Range: 2.7V to 5.5V
- Quiescent Current: 1.6mA (typical)
- Output Power: 1.1W (typical) into 8Ω at 5V
- Total Harmonic Distortion + Noise (THD+N): 0.2% (typical) at 1kHz, 1W into 8Ω
- Shutdown Current: 0.01μA (typical)
- Operating Temperature Range: -40°C to +85°C
Pin Configuration
The LM4819MX/NOPB has the following pin configuration:
___________
| |
IN+ |1 8| VDD
IN- |2 7| SHUTDOWN
GND |3 6| OUT
NC |4 5| BYPASS
|___________|
Functional Features
- Low quiescent current consumption allows for longer battery life in portable devices.
- Wide supply voltage range enables operation with various power sources.
- Small package size facilitates space-saving designs.
- High output power capability ensures sufficient audio amplification.
Advantages
- Low distortion and high-quality audio amplification.
- Efficient power consumption for extended battery life.
- Versatile supply voltage range for compatibility with different systems.
- Compact package size for easy integration into various applications.
Disadvantages
- Limited to mono audio amplification, not suitable for stereo applications.
- Output power may not be sufficient for high-power audio requirements.
Working Principles
The LM4819MX/NOPB operates as a Class AB audio power amplifier. It amplifies the input audio signal and delivers it to the connected speaker or load. The amplifier operates in a low quiescent current mode when no audio signal is present, reducing power consumption. When an audio signal is detected, the amplifier quickly switches to the active mode, providing amplified audio output.
Detailed Application Field Plans
The LM4819MX/NOPB is commonly used in various low-power audio applications, including: 1. Portable audio devices such as MP3 players and smartphones 2. Battery-powered speakers and headphones 3. Personal computer audio systems 4. Automotive audio systems 5. Home entertainment systems
Detailed and Complete Alternative Models
- LM4861MX/NOPB: Stereo Class AB audio power amplifier with similar characteristics and package.
- LM386N-1/NOPB: Mono Class AB audio power amplifier with lower power output but smaller package size.
- TPA3110D2PWP: Stereo Class D audio power amplifier with higher efficiency and digital input interface.
These alternative models offer different features and specifications, allowing designers to choose the most suitable option for their specific application requirements.
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Q: What is the maximum power output of LM4819MX/NOPB? A: The maximum power output of LM4819MX/NOPB is 1.25W per channel into 8Ω.
Q: What is the supply voltage range for LM4819MX/NOPB? A: The supply voltage range for LM4819MX/NOPB is 2.7V to 5.5V.
Q: Does LM4819MX/NOPB require external coupling capacitors? A: No, LM4819MX/NOPB does not require external coupling capacitors.
Q: Can LM4819MX/NOPB be used in portable audio applications? A: Yes, LM4819MX/NOPB is suitable for portable audio applications due to its low power consumption and small package size.
Q: What is the typical THD+N (Total Harmonic Distortion + Noise) for LM4819MX/NOPB? A: The typical THD+N for LM4819MX/NOPB is 0.1% at 1kHz and 10% of the maximum output power.
Q: Is LM4819MX/NOPB suitable for headphone amplification? A: Yes, LM4819MX/NOPB can be used for headphone amplification with appropriate circuit design.
Q: What is the shutdown current of LM4819MX/NOPB? A: The shutdown current of LM4819MX/NOPB is typically 0.6µA.
Q: Can LM4819MX/NOPB operate from a single supply voltage? A: Yes, LM4819MX/NOPB can operate from a single supply voltage.
Q: What is the recommended layout for LM4819MX/NOPB to minimize noise and interference? A: It is recommended to keep input and output traces short and separate, and to use proper grounding techniques to minimize noise and interference.
Q: Are there any thermal considerations when using LM4819MX/NOPB? A: It is important to ensure adequate heat dissipation for LM4819MX/NOPB, especially when operating at high power levels or in elevated ambient temperatures.