• Part: LM4912
  • Description: Stereo 40mW Low Noise Headphone Amplifier
  • Manufacturer: National Semiconductor
  • Size: 699.16 KB
Download LM4912 Datasheet PDF
National Semiconductor
LM4912
Description The LM4912 is an stereo audio power amplifier capable of delivering 40m W per channel of continuous average power into a 16Ω load or 25m W per channel into a 32Ω load at 1% THD form a 3V power supply. Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external ponents. Since the LM4912 does not require bootstrap capacitors or snubber networks, it is optimally suited for low-power portable systems. The LM4912 features a low-power consumption shutdown mode and a power mute mode that allows for faster turn on time with less than 1m V voltage change at outputs on release. Additionally, the LM4912 features an internal thermal shutdown protection mechanism. The LM4912 is unity gain stable and may be configured with external gain-setting resistors. Key Specifications n PSRR at 217 Hz and 1k Hz 65d B (typ) n Output Power at 1k Hz with VDD = 2.4V, 1% THD+N into a 16Ω load 25m W (typ) n Output Power at 1k Hz with VDD = 3V,...