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LM4811MM

Name: LM4811MM
Rating: 4.7 (12 reviews)

Audio Amplifiers

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規格

Packaging	MouseReel
Standard Pack Qty	1000

概述

Description

The LM4811MM is a low-voltage audio power amplifier designed for portable applications. It is a dual-channel amplifier capable of driving 2.2W into an 8Ω load with a 5V supply, making it ideal for battery-operated devices. The device features low total harmonic distortion (THD) and high efficiency, which helps extend battery life.
Key features include a built-in gain setting for easy configuration, thermal shutdown protection, and short-circuit protection, ensuring reliable operation. The LM4811MM also supports a wide supply voltage range, typically from 2.7V to 5.5V, making it versatile for various audio applications.
Its small footprint and low power consumption make it suitable for mobile phones, handheld devices, and portable speakers. Overall, the LM4811MM is a robust solution for designers seeking to enhance audio performance in compact electronic devices.

Features

The LM4811MM is a low-power audio amplifier designed for portable applications. Key features include:
1. Power Output: It delivers 1W of output power into an 8Ω load, making it suitable for driving small speakers.
2. Low Supply Voltage: Operates from a single supply voltage range of 2.2V to 5.5V, enhancing versatility in battery-powered devices.
3. Low Total Harmonic Distortion (THD): Achieves low THD, ensuring high-quality audio reproduction.
4. Built-in Pop and Click Suppression: Minimizes noise during power-up and shutdown.
5. Thermal Shutdown Protection: Integrated protection against overheating, ensuring reliability.
6. Adjustable Gain: Features configurable gain settings, allowing optimization for specific applications.
7. Compact Package: Available in a small surface-mount package, facilitating space-saving designs.
The LM4811MM is ideal for mobile devices, portable speakers, and other applications where efficient audio amplification is required.

Package

The LM4811MM is packaged in a 16-pin TSSOP (Thin Shrink Small Outline Package). This type of package is designed for surface mounting and provides a compact footprint suitable for space-constrained applications.

Pinout

The LM4811MM is a low-power, stereo headphone amplifier with a pin count of 8.
Pin Functions:
1. VDD (Pin 1): Power supply input (2.5V to 5.5V).
2. OUTL (Pin 2): Left audio output to headphones.
3. OUTR (Pin 3): Right audio output to headphones.
4. GND (Pin 4): Ground reference.
5. INL (Pin 5): Left audio input.
6. INR (Pin 6): Right audio input.
7. SHUTDOWN (Pin 7): Active low shutdown control.
8. VREF (Pin 8): Reference voltage output for biasing.
The LM4811MM is designed for portable applications, providing good audio quality with high output power while consuming minimal power.

Manufacturer

The LM4811MM is manufactured by Texas Instruments, a leading global technology company specializing in the design and manufacturing of semiconductors and various electronic components. Founded in 1930 and headquartered in Dallas, Texas, Texas Instruments is known for its innovations in analog and embedded processing products. The company serves a wide range of markets, including automotive, industrial, communications, and consumer electronics. Texas Instruments is particularly recognized for its expertise in analog chips, microcontrollers, and signal processing technology.

Application

The LM4811MM is a low-power audio amplifier primarily used in portable devices such as mobile phones, handheld gaming systems, and laptops. Its application areas also include televisions, mini audio systems, and other consumer electronics that require compact, efficient sound amplification. The device is suitable for driving small speakers or headphones, providing quality audio output while conserving battery life.

Equivalent

Equivalent products to the LM4811MM audio amplifier chip include the TI LM4861, LM4862, and LM4871, as well as the Maxim MAX9744 and MAX9745. These alternatives typically offer similar functionalities and specifications for driving speakers in consumer electronics. Always check datasheets for specific parameters and compatibility.