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The LM49352 is a high performance mixed signal audio subsystem. The LM49352 includes a high quality stereo DAC, a high quality stereo ADC, a stereo headphone amplifier, which supports True Ground operation, a low EMI Class D loudspeaker amplifier, and an earpiece speaker amplifier. It combines advanced audio processing, conversion, mixing, and amplification .
dual bi-directional I2S or PCM audio interfaces and an I2C compatible interface for control. The stereo DAC path features an SNR of 103dB with 24-bit 48 kHz input. The headphone amplifier delivers 65mWRMS (typ) to a 32Ω single-ended stereo load with less than 1% distortion (THD+N) when HP_VDD = 2.8V. The loudspeaker amplifier delivers up to 970mW into an 8Ω load with less than 1% distortion when LS_VDD = 4.2V. The LM49352 employs advanced techniques to extend battery life, to reduce controller overhead, to speed development time, and to eliminate click and pop artifacts. Boomer audio power amp.
| No. | Partie # | Fabricant | Description | Fiche Technique |
|---|---|---|---|---|
| 1 | LM4935 |
National Semiconductor |
Audio Sub-System |
|
| 2 | LM49350 |
National Semiconductor |
High Performance Audio Codec Sub-System |
|
| 3 | LM4930 |
National Semiconductor |
Audio Subsystem |
|
| 4 | LM4930 |
Texas Instruments |
Audio Subsystem |
|
| 5 | LM4931 |
National Semiconductor |
Audio Subsystem |
|
| 6 | LM4931 |
Texas Instruments |
Audio Subsystem |
|
| 7 | LM49321 |
National Semiconductor |
Audio Sub-System |
|
| 8 | LM4934 |
National Semiconductor |
3D Audio Sub-System |
|
| 9 | LM4936 |
Texas Instruments |
Stereo 2W Audio Power Amplifiers |
|
| 10 | LM4936 |
National Semiconductor |
Stereo 2W Audio Power Amplifiers |
|
| 11 | LM4937 |
National Semiconductor |
Audio Sub-System |
|
| 12 | LM49370 |
National Semiconductor |
Audio Sub-System |
|