LM4682 Datasheet | National Semiconductor

Description The LM4682 is a fully integrated single supply, high efficiency audio power amplifier solution. The LM4682 utilizes a proprietary balanced pulse-width modulation technique that lowers output noise and THD and improves PSRR when pared to conventional pulse width modulators. The LM4682 also features a stereo headphone amplifier that delivers 60m W into a 32Ω headset with less than 0.5% THD. The LM4682’s DC volume control has a +30d B to - 48d B range when speakers are driven and a range of +13d B to - 65d B when headphones are connected. All amplifiers are protected by thermal shutdown. Additionally, all amplifiers incorporate output current limiting function to protect their outputs from short circuit. The LM4682 features a low-power consumption shutdown mode. And its efficiency reaches 85% for a 10W output power with an 8Ω load. External heatsink is not required when playing music. The IC features click and pop reduction circuitry that minimizes audible popping during device...