Manufacturer Part Number
LM4990MH
Manufacturer
Texas Instruments
Introduction
The LM4990MH is a high-performance, low-power, audio power amplifier designed for a wide range of consumer and professional audio applications.
Product Features and Performance
1-channel (mono) operation
Delivers up to 2 watts of output power into a 4-ohm load
Class AB operation
Wide supply voltage range of 2.2V to 5.5V
Low quiescent current of 5mA
Low distortion and noise
Short-circuit and thermal protection
Small 10-HVSSOP package
Product Advantages
High efficiency and low power consumption
Compact size for space-constrained designs
Excellent audio performance with low distortion
Wide operating voltage range for versatile applications
Key Technical Parameters
Output Power: 2W x 1 channel @ 4Ω load
Supply Voltage Range: 2.2V to 5.5V
Quiescent Current: 5mA
THD+N: 0.1% (1W, 1kHz)
Bandwidth: 20Hz to 20kHz
Operating Temperature Range: -40°C to 85°C
Quality and Safety Features
Short-circuit protection
Thermal shutdown protection
ESD protection
Compatibility
This amplifier is suitable for a wide range of consumer and professional audio applications, such as portable speakers, headphones, and other audio equipment.
Application Areas
Portable audio devices
Home entertainment systems
Professional audio equipment
Industrial and commercial sound systems
Product Lifecycle
The LM4990MH is an active product in Texas Instruments' lineup and is not nearing discontinuation. Replacement and upgrade options are available from Texas Instruments.
Key Reasons to Choose This Product
High-performance audio amplification in a small package
Efficient operation with low power consumption
Wide supply voltage range for versatile applications
Excellent audio quality with low distortion and noise
Robust protection features for reliable operation
Compatibility with a wide range of audio applications
