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LM49352 Scheda tecnica(PDF) 2 Page - Texas Instruments |
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LM49352 Scheda tecnica(HTML) 2 Page - Texas Instruments |
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2 / 106 page  EP+/ AUX_OUT+ LS_OUT+ HPL_OUT HPR_OUT DACREF MCLK A_VDD D_VDD SCL SDA PORT1_CLK PORT1_WS PORT1_SDI PORT1_SDO PORT2_CLK PORT2_WS PORT2_SDI MONO_IN- MONO_IN+ POWER MANAGEMENT and CONTROL CLOCK NETWORK with 6' PLL REGISTERS I 2 C SLAVE BG AB AB -46.5 dB to 18 dB 6 dB to 36 dB PORT2_SDO/GPIO RIGHT ADC 6' 6' LEFT ADC DAC EFFECTS VOL CTRL 5-BAND EQ ALC AB CHARGE PUMP CP+ CP- LS_VDD LSGND AGND DGND I/O_VDD 6' LEFT DAC 6' RIGHT DAC HPVSS MIC+ VCM EP-/ AUX_OUT- LS_OUT- MIC- VCM ADC EFFECTS VOL CTRL 5-BAND EQ ALC AUXR / AUX+ AUXL / AUX- VCM HP_VSS HP_VSS HP_VDD HP_VDD HP_VDD 0 dB to 12 dB -18 dB to 0 dB D -18 dB to 0 dB ADCREF 0 dB to 6 dB LM49352 SNAS467E – MARCH 2009 – REVISED MARCH 2013 www.ti.com DESCRIPTION (CONTINUED) The LM49352 features 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 8 Ω 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 amplifiers are designed specifically for mobile devices and require minimal PCB area and external components. LM49352 Overview Figure 1. LM49352 Block Diagram 2 Submit Documentation Feedback Copyright © 2009–2013, Texas Instruments Incorporated Product Folder Links: LM49352 |
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