LM4859SP/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Audio Amplifier

Characteristics: - High-quality audio amplification - Low power consumption - Small form factor - Wide voltage range operation

Package: SOP-8 (Small Outline Package)

Essence: The LM4859SP/NOPB is a high-performance audio amplifier IC designed for various portable audio applications.

Packaging/Quantity: The LM4859SP/NOPB is typically sold in reels containing 2500 units.

Specifications

• Supply Voltage Range: 2.5V to 5.5V
• Output Power: Up to 1.1W per channel into 8Ω load at 5V supply
• Total Harmonic Distortion + Noise (THD+N): 0.1% (typical)
• Shutdown Current: 0.01µA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The LM4859SP/NOPB features an SOP-8 package with the following pin configuration:

┌───┬───┐ │ 1 │ 2 │ │ 3 │ 4 │ │ 5 │ 6 │ │ 7 │ 8 │ └───┴───┘

1. VDD: Power supply input
2. GND: Ground reference
3. SD: Shutdown control input
4. INL: Left channel audio input
5. BYP: Bypass capacitor connection
6. OUTL: Left channel audio output
7. INR: Right channel audio input
8. OUTR: Right channel audio output

Functional Features

• Single-ended or differential input configuration
• Pop and click suppression circuitry
• Thermal shutdown protection
• Short-circuit and thermal overload protection

Advantages and Disadvantages

Advantages: - High-quality audio amplification for portable devices - Low power consumption extends battery life - Small form factor allows for compact designs - Wide voltage range operation provides flexibility in power supply options

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

Working Principles

The LM4859SP/NOPB is a class AB audio amplifier that utilizes a bridge-tied load (BTL) configuration. It amplifies the audio signal received from the input channels and drives the corresponding output channels. The amplifier operates within a specified voltage range and incorporates various protection mechanisms to ensure reliable operation.

Detailed Application Field Plans

The LM4859SP/NOPB is suitable for a wide range of portable audio applications, including but not limited to: - Mobile phones - Tablets - Portable media players - Bluetooth speakers - Gaming devices

Detailed and Complete Alternative Models

1. LM4863: 1.1W Audio Power Amplifier with Shutdown Mode
2. LM4889: 1.1W Audio Power Amplifier with Shutdown Mode and Stereo Headphone Jack Detection

These alternative models offer similar functionality and performance characteristics to the LM4859SP/NOPB and can be considered as alternatives based on specific application requirements.

In conclusion, the LM4859SP/NOPB is a versatile audio amplifier IC designed for portable audio applications. Its high-quality audio amplification, low power consumption, and small form factor make it an ideal choice for various portable devices. However, its limited output power and potential need for additional external components should be taken into consideration when selecting this IC for a specific application.