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LM4861MX/NOPB Audio Power Amplifier IC Audio Amplifiers 1.1W Audio Pwr Amp
FEATURES
Small Outline (SOIC) packaging
Compatible with PC power supplies
Thermal shutdown protection circuitry
Unity-gain stable
External gain configuration capability
APPLICATIONS
Personal computers
Portable consumer products
Self-powered speakers
Toys and games
KEY SPECIFICATIONS
• THD+N for 1kHz at 1W continuous average output power into 8Ω 1.0%
(max)
• Output power at 10% THD+N at 1kHz into 8Ω 1.5 W (typ)
• Shutdown Current 0.6μA (typ)
DESCRIPTION
The LM4861 is a bridge-connected audio power amplifier capable of delivering 1.1W of continuous average power to an 8Ω load with 1% THD+N using a 5V power supply.
Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components using surface mount packaging. Since the LM4861 does not require output coupling capacitors, bootstrap capacitors, or snubber networks, it is optimally suited for low-power portable systems.
The LM4861 features an externally controlled, low- power consumption shutdown mode, as well as an internal thermal shutdown protection mechanism.
The unity-gain stable LM4861 can be configured by external gain-setting resistors for differential gains of up to 10 without the use of external compensation components. Higher gains may be achieved with suitable compensation.
