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LM4934 Arkusz danych(PDF) 1 Page - National Semiconductor (TI) |
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LM4934 Arkusz danych(HTML) 1 Page - National Semiconductor (TI) |
1 / 39 page LM4934 3D Audio Sub-System with Stereo Speaker, OCL/SE Stereo Headphone, Earpiece and Mono Line Level Outputs General Description The LM4934 is an integrated audio sub-system designed for stereo cell phone applications. Operating on a 3.3V supply, it combines a stereo speaker amplifier delivering 520mW per channel into an 8 Ω load, a stereo headphone amplifier de- livering 36mW per channel into a 32 Ω load, a mono earpiece amplifier delivering 55mW into a 32 Ω load, and a line output for an external powered handsfree speaker. It integrates the audio amplifiers, volume control, mixer, power management control, and National 3D enhancement all into a single pack- age. In addition, the LM4934 routes and mixes the stereo and mono inputs into multiple distinct output modes. The LM4934 features an I2S serial interface for full range audio and an I2C/SPI compatible interface for control. Boomer audio power amplifiers are designed specifically to provide high quality output power with a minimal amount of external components. Key Specifications j POUT, Stereo BTL, 8 Ω, 3.3V, 1% THD+N 520mW (typ) j POUT HP, 32 Ω, 3.3V, 1% THD+N 36mW (typ) j POUT Mono Earpiece, 32 Ω, 3.3V, 1% THD+N 55mW (typ) j Shutdown current 0.6µA (typ) j DAC SNR 95dB (typ) Features n 18-bit stereo DAC n Multiple distinct output modes n Stereo speaker amplifier n Stereo headphone amplifier n Mono earpiece amplifier n Mono Line Output for external handsfree carkit n Independent Left, Right, headphone and Mono speaker volume controls n National 3D enhancement with programmable effect level n I 2C/SPI (selectable) compatible interface n Ultra low shutdown current n Click and Pop Suppression circuit Applications n Cell Phones n PDAs Boomer® is a registered trademark of National Semiconductor Corporation. February 2006 © 2006 National Semiconductor Corporation DS201669 www.national.com |
Podobny numer części - LM4934_06 |
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Podobny opis - LM4934_06 |
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