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LM4900MM/NOPB
Product Overview
Category: Integrated Circuit (IC)
Use: Audio Amplifier
Characteristics: - Single supply voltage: 2.7V to 5.5V - Output power: 1W - Low quiescent current: 4mA - Shutdown mode for power saving - Thermal shutdown protection - Short-circuit and thermal overload protection
Package: 8-pin SOIC (Small Outline Integrated Circuit)
Essence: The LM4900MM/NOPB is a mono audio amplifier IC designed for low-power applications. It provides high-quality audio amplification with minimal power consumption.
Packaging/Quantity: The LM4900MM/NOPB is typically sold in reels containing 2500 units per reel.
Specifications
- Supply Voltage Range: 2.7V to 5.5V
- Quiescent Current: 4mA
- Output Power: 1W into 8Ω at 5V
- Shutdown Current: 0.01μA
- Total Harmonic Distortion + Noise (THD+N): 0.2% (typical)
- Signal-to-Noise Ratio (SNR): 90dB (typical)
- Shutdown Mode Supply Current: 0.01μA
Pin Configuration
The LM4900MM/NOPB has the following pin configuration:
___________
| |
NC |1 8| VDD
IN- |2 7| SHUTDOWN
IN+ |3 6| OUT
GND |4 5| BYPASS
|___________|
Functional Features
- Low Power Consumption: The LM4900MM/NOPB operates on a single supply voltage, making it suitable for battery-powered devices.
- Shutdown Mode: It includes a shutdown pin that allows the amplifier to enter a low-power state when not in use, conserving energy.
- Thermal Shutdown Protection: The IC has built-in thermal protection to prevent overheating and ensure safe operation.
- Short-Circuit and Thermal Overload Protection: The LM4900MM/NOPB incorporates protection mechanisms to safeguard against short-circuits and thermal overloads, enhancing its durability.
Advantages and Disadvantages
Advantages: - Low power consumption - Compact package size - Shutdown mode for power saving - Built-in protection features
Disadvantages: - Limited output power (1W) - Mono audio amplification only
Working Principles
The LM4900MM/NOPB is a class AB audio amplifier that utilizes a single supply voltage. It amplifies the input audio signal and delivers it to the connected speaker or load. The IC operates in a low quiescent current mode, minimizing power consumption. It also includes shutdown, thermal shutdown, and short-circuit protection features to ensure safe and reliable operation.
Application Field Plans
The LM4900MM/NOPB can be used in various applications, including: 1. Portable audio devices 2. Mobile phones 3. Personal computers 4. Gaming consoles 5. Home entertainment systems
Alternative Models
Some alternative models to the LM4900MM/NOPB include: - LM4861MM/NOPB - LM4881MM/NOPB - LM4950MM/NOPB - LM4990MM/NOPB
These models offer similar functionality and characteristics, providing options for different design requirements.
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Énumérez 10 questions et réponses courantes liées à l'application de LM4900MM/NOPB dans les solutions techniques
What is the LM4900MM/NOPB?
- The LM4900MM/NOPB is a high-performance audio power amplifier designed for use in portable and battery-powered applications.
What is the typical supply voltage range for the LM4900MM/NOPB?
- The typical supply voltage range for the LM4900MM/NOPB is 2.7V to 5.5V.
What is the output power capability of the LM4900MM/NOPB?
- The LM4900MM/NOPB can deliver up to 1.1W of continuous average power into an 8Ω load.
What is the efficiency of the LM4900MM/NOPB?
- The efficiency of the LM4900MM/NOPB is typically around 85% at 400mW into an 8Ω load.
What is the input impedance of the LM4900MM/NOPB?
- The input impedance of the LM4900MM/NOPB is typically 60kΩ.
Can the LM4900MM/NOPB be used in bridge-tied load (BTL) configurations?
- Yes, the LM4900MM/NOPB can be used in bridge-tied load (BTL) configurations to achieve higher output power.
What is the quiescent current consumption of the LM4900MM/NOPB?
- The quiescent current consumption of the LM4900MM/NOPB is typically 4.6mA.
Does the LM4900MM/NOPB have built-in thermal shutdown protection?
- Yes, the LM4900MM/NOPB features built-in thermal shutdown protection to prevent overheating.
What is the recommended operating temperature range for the LM4900MM/NOPB?
- The recommended operating temperature range for the LM4900MM/NOPB is -40°C to 85°C.
Is the LM4900MM/NOPB suitable for use in portable audio devices and headphones?
- Yes, the LM4900MM/NOPB is well-suited for use in portable audio devices, headphones, and other battery-powered applications due to its low power consumption and small form factor.