Electronic Manufacturer | Part no | Datasheet | Electronics Description |
 National Semiconductor ... | LM4910 |  | Output Capacitor-less Stereo 35mW Headphone Amplifier |
LM49100 |  | Mono Class AB Audio Subsystem with a True-Ground Headphone Amplifier |
LM49100 |  | Mono Class AB Audio Sub-System with a True-Ground Headphone Amplifier |
 National Semiconductor ... | LM49100_0709 |  | Mono Class AB Audio Sub-System with a True-Ground Headphone Amplifier |
 National Semiconductor ... | LM49101 |  | Mono Class AB Audio Subsystem with a True Ground Headphone Amplifier and Earpiece Switch |