LM4805LQ/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

Characteristics: - High-performance audio amplifier - Low power consumption - Small form factor - Suitable for portable electronic devices

Package: QFN (Quad Flat No-leads)

Essence: The LM4805LQ/NOPB is a high-quality audio amplifier designed for various portable electronic devices. It provides excellent sound reproduction while consuming minimal power.

Packaging/Quantity: The LM4805LQ/NOPB is available in a QFN package and is typically sold in reels of 2500 units.

Specifications

• Supply Voltage Range: 2.7V to 5.5V
• Output Power: Up to 1.3W per channel
• Total Harmonic Distortion (THD): <0.1%
• Signal-to-Noise Ratio (SNR): >90dB
• Shutdown Current: <1µA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The LM4805LQ/NOPB has the following pin configuration:

1. VDD: Power supply voltage input
2. GND: Ground reference
3. SD: Shutdown control input
4. IN+: Positive audio input
5. IN-: Negative audio input
6. OUT+: Positive audio output
7. OUT-: Negative audio output

Functional Features

• Low quiescent current consumption
• Thermal shutdown protection
• Short-circuit and over-temperature protection
• Pop and click suppression during power-up and shutdown
• Wide supply voltage range for compatibility with different systems

Advantages and Disadvantages

Advantages: - High-quality audio reproduction - Low power consumption - Compact size - Protection features for enhanced reliability - Wide supply voltage range

Disadvantages: - Limited output power compared to higher wattage amplifiers - May require additional external components for optimal performance

Working Principles

The LM4805LQ/NOPB is a class AB audio amplifier that utilizes a bridge-tied load (BTL) configuration. It amplifies the audio signal received at the input and delivers it to the connected speakers or headphones. The amplifier operates by modulating the input signal using a pair of complementary transistors, ensuring efficient power transfer and minimal distortion.

Detailed Application Field Plans

The LM4805LQ/NOPB is widely used in various portable electronic devices, including: - Mobile phones - Tablets - Portable media players - Bluetooth speakers - Gaming consoles

Its compact size, low power consumption, and high-quality audio reproduction make it an ideal choice for these applications.

Detailed and Complete Alternative Models

1. LM4863LQ/NOPB
2. TPA3116D2
3. MAX9744
4. TAS5713
5. PAM8403

These alternative models offer similar functionality and can be considered as alternatives to the LM4805LQ/NOPB based on specific application requirements.

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