LM4880M

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

Characteristics: - Mono audio amplifier - Low voltage operation - High output power - Small package size - Low distortion and noise

Package: SOIC (Small Outline Integrated Circuit)

Essence: The LM4880M is a mono audio amplifier IC designed for low voltage applications. It provides high-quality audio amplification with low distortion and noise.

Packaging/Quantity: The LM4880M is available in a standard SOIC package. It is typically sold in reels or tubes containing multiple units.

Specifications

Supply Voltage: 2.5V to 5.5V
Output Power: Up to 1W
Total Harmonic Distortion (THD): <0.1%
Signal-to-Noise Ratio (SNR): >90dB
Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM4880M has a total of 8 pins, which are assigned specific functions as follows:

VDD: Positive supply voltage
IN+: Non-inverting input
IN-: Inverting input
GND: Ground
BYP: Bypass capacitor connection
OUT: Output
SHUTDOWN: Shutdown control input
VSS: Negative supply voltage

Functional Features

Low voltage operation allows for use in battery-powered devices.
High output power enables driving small speakers or headphones.
Low distortion and noise ensure high-quality audio reproduction.
Shutdown control feature allows for power-saving mode when not in use.

Advantages

Wide operating voltage range makes it suitable for various applications.
Small package size saves board space and facilitates compact designs.
High output power capability enables driving speakers with sufficient volume.
Low distortion and noise result in clear and accurate audio reproduction.

Disadvantages

Mono configuration limits its use to single-channel audio applications.
Limited output power may not be sufficient for high-power audio systems.
Requires external components (bypass capacitor) for optimal performance.

Working Principles

The LM4880M is a class AB audio amplifier that amplifies the input audio signal to a higher power level suitable for driving speakers or headphones. It operates by modulating the input signal using a pair of complementary transistors, which allows for efficient power conversion and low distortion.

Detailed Application Field Plans

The LM4880M can be used in various applications, including but not limited to: - Portable audio devices - Mobile phones - Tablets - Personal computers - Gaming consoles - Home audio systems

Alternative Models

LM4881M: Similar to LM4880M, but with stereo configuration.
LM4860M: Higher output power version of LM4880M.
TPA3116D2: Class D audio amplifier with higher efficiency.

These alternative models offer different features and specifications, providing flexibility for specific application requirements.

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Sebutkan 10 pertanyaan dan jawaban umum terkait penerapan LM4880M dalam solusi teknis

Sure! Here are 10 common questions and answers related to the application of LM4880M in technical solutions:

Q: What is LM4880M? A: LM4880M is a dual audio power amplifier that can be used in various audio applications.
Q: What is the maximum output power of LM4880M? A: The maximum output power of LM4880M is typically 250mW per channel into an 8-ohm load.
Q: Can LM4880M operate on a single power supply? A: Yes, LM4880M can operate on a single power supply ranging from 2.5V to 5.5V.
Q: How many channels does LM4880M support? A: LM4880M is a dual-channel amplifier, meaning it can drive two separate audio channels simultaneously.
Q: What is the input voltage range for LM4880M? A: The input voltage range for LM4880M is typically between -0.3V and Vcc+0.3V.
Q: Does LM4880M have built-in thermal shutdown protection? A: Yes, LM4880M has built-in thermal shutdown protection to prevent overheating.
Q: Can LM4880M be used in portable audio devices? A: Yes, LM4880M's low power consumption and small package make it suitable for portable audio applications.
Q: What is the typical total harmonic distortion (THD) of LM4880M? A: The typical THD of LM4880M is less than 0.1% at 1kHz with a 250mW output power.
Q: Is LM4880M compatible with both analog and digital audio signals? A: Yes, LM4880M can amplify both analog and digital audio signals.
Q: Can LM4880M be used in stereo systems? A: Yes, LM4880M can be used in stereo systems by connecting two separate LM4880M chips to drive the left and right channels.

Please note that these answers are general and may vary depending on specific application requirements and circuit design considerations.