LM4838MTEX/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

Characteristics: - High-performance audio amplifier - Low power consumption - Small package size - Wide operating voltage range

Package: TSSOP-20

Essence: The LM4838MTEX/NOPB is a high-performance audio amplifier IC designed for various audio applications.

Packaging/Quantity: Available in tape and reel packaging with 2500 units per reel.

Specifications

The LM4838MTEX/NOPB has the following specifications:

• Supply Voltage Range: 2.7V to 5.5V
• Output Power: Up to 1.3W per channel
• Total Harmonic Distortion + Noise (THD+N): 0.1% at 1kHz, 1.2W into 8Ω
• Efficiency: 85% at 400mW into 8Ω
• Shutdown Current: 0.01μA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM4838MTEX/NOPB has a TSSOP-20 package with the following pin configuration:

1. SD (Shutdown)
2. INL- (Left Channel Input Negative)
3. INL+ (Left Channel Input Positive)
4. VDD (Power Supply)
5. BYP (Bypass Capacitor)
6. OUTL- (Left Channel Output Negative)
7. OUTL+ (Left Channel Output Positive)
8. GND (Ground)
9. INR+ (Right Channel Input Positive)
10. INR- (Right Channel Input Negative)
11. VREF (Reference Voltage)
12. VCM (Common Mode Voltage)
13. VOUTR+ (Right Channel Output Positive)
14. VOUTR- (Right Channel Output Negative)
15. VDDA (Analog Power Supply)
16. VDDIO (Digital I/O Power Supply)
17. SDA (I2C Serial Data)
18. SCL (I2C Serial Clock)
19. NC (No Connection)
20. NC (No Connection)

Functional Features

The LM4838MTEX/NOPB offers the following functional features:

1. High-Quality Audio Amplification: Provides high-quality audio amplification for various audio applications.
2. Low Power Consumption: Operates efficiently with low power consumption, making it suitable for portable devices.
3. Wide Operating Voltage Range: Can operate within a wide voltage range, allowing flexibility in different power supply configurations.
4. Shutdown Mode: Includes a shutdown mode to minimize power consumption when not in use.
5. I2C Control Interface: Supports I2C control interface for easy integration into digital audio systems.

Advantages and Disadvantages

Advantages: - High-performance audio amplification - Low power consumption - Small package size - Wide operating voltage range - Shutdown mode for power saving - I2C control interface for easy integration

Disadvantages: - Limited output power compared to higher wattage amplifiers - Requires external components for proper operation

Working Principles

The LM4838MTEX/NOPB operates as an audio amplifier by receiving audio input signals and amplifying them to drive speakers or headphones. It utilizes internal circuitry to process the audio signals and deliver amplified output with minimal distortion and noise. The IC can be controlled through the I2C interface, allowing for customization of various audio parameters.

Detailed Application Field Plans

The LM4838MTEX/NOPB is suitable for a wide range of audio applications, including but not limited to: - Portable audio devices (e.g., smartphones, tablets, portable media players) - Headphone amplifiers - Multimedia systems - Gaming consoles - Automotive audio systems

Detailed and Complete Alternative Models

1. LM4838MT/NOPB: Similar to LM4838MTEX/NOPB but without the I2C control interface.
2. LM4863MTEX/NOPB: Audio amplifier IC with higher output power and similar features.
3. LM386M-1/NOPB: Low voltage audio power amplifier with a simpler pin configuration.

These alternative models offer different specifications and features, allowing users to choose the most suitable option for their specific requirements.

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