Overview
The LM4876MM/NOPB is a 1.1W audio power amplifier manufactured by Texas Instruments, designed for applications requiring high-quality audio output in compact devices. This Class-AB amplifier is optimized for low-power operation and features a logic low shutdown mode, making it ideal for portable electronics such as smartphones, tablets, and portable speakers. Its small form factor, coupled with robust performance, positions it as a competitive choice for consumer electronics and industrial audio applications.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Output Power | 1.1 | W | @ 8Ω, 5V |
| THD + N | 0.25 | % | @ 1kHz |
| PSRR | 65 | dB | |
| Supply Voltage | 2 - 5.5 | V | |
| Quiescent Current | 6.5 | mA | Typical |
| Operating Temperature | -40 to 85 | °C | |
| Package | 10-MSOP | Surface Mount |
Key Features
- High-efficiency Class-AB architecture for low power consumption.
- Logic low shutdown mode for reduced power usage in standby.
- Built-in thermal and short-circuit protection for enhanced reliability.
- Wide supply voltage range (2V to 5.5V) for versatile applications.
- Compact 10-MSOP package for space-constrained designs.
Applications
The LM4876MM/NOPB is widely used in portable audio devices, including smartphones, tablets, and Bluetooth speakers. Its ability to deliver clear audio with minimal distortion makes it suitable for consumer electronics. Additionally, it is employed in industrial applications such as intercom systems and audio-enabled IoT devices, where reliable performance in compact designs is essential.
Q & A
1. What is the output power of the LM4876MM/NOPB?
The output power is 1.1W when driving an 8Ω load at 5V.
2. What is the typical quiescent current?
The typical quiescent current is 6.5mA.
3. What is the operating temperature range?
The operating temperature ranges from -40°C to 85°C.
4. Does it support shutdown mode?
Yes, it features a logic low shutdown mode to reduce power consumption.
5. What is the package type?
It comes in a 10-MSOP surface-mount package.
6. What is the supply voltage range?
The supply voltage ranges from 2V to 5.5V.
7. Is thermal protection included?
Yes, it includes thermal protection to prevent overheating.
8. What is the THD + N at 1kHz?
The THD + N is 0.25% at 1kHz.
9. Can it drive a 4Ω load?
While it is optimized for 8Ω loads, it can drive 4Ω loads with reduced output power.
10. What are the typical applications?
Typical applications include portable audio devices, intercom systems, and IoT audio solutions.
