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ADAU1401A bảng dữ liệu(PDF) 1 Page - Analog Devices |
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ADAU1401A bảng dữ liệu(HTML) 1 Page - Analog Devices |
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1 / 53 page  SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs ADAU1401A Rev. A Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2010 Analog Devices, Inc. All rights reserved. FEATURES 28-/56-bit, 50 MIPS digital audio processor 2 ADCs: SNR of 100 dB, THD + N of −83 dB 4 DACs: SNR of 104 dB, THD + N of −90 dB Complete standalone operation Self-boot from serial EEPROM Auxiliary ADC with 4-input mux for analog control GPIOs for digital controls and outputs Fully programmable with SigmaStudio graphical tool 28-bit × 28-bit multiplier with 56-bit accumulator for full double-precision processing Clock oscillator for generating master clock from crystal PLL for generating master clock from 64 × fS, 256 × fS, 384 × fS, or 512 × fS clocks Flexible serial data input/output ports with I2S-compatible, left-justified, right-justified, and TDM modes Sampling rates of up to 192 kHz supported On-chip voltage regulator for compatibility with 3.3 V systems 48-lead, plastic LQFP Qualified for automotive applications APPLICATIONS Multimedia speaker systems MP3 player speaker docks Automotive head units Minicomponent stereos Digital televisions Studio monitors Speaker crossovers Musical instrument effects processors In-seat sound systems (aircraft/motor coaches) GENERAL DESCRIPTION The ADAU1401A is a complete, single-chip audio system with 28-/56-bit audio DSP, ADCs, DACs, and microcontroller-like control interfaces. Signal processing includes equalization, cross- over, bass enhancement, multiband dynamics processing, delay compensation, speaker compensation, and stereo image widening. This processing can be used to compensate for real-world limita- tions of speakers, amplifiers, and listening environments, providing dramatic improvements in perceived audio quality. The signal processing of the ADAU1401A is comparable to that found in high end studio equipment. Most processing is done in full 56-bit, double-precision mode, resulting in very good low level signal performance. The ADAU1401A is a fully program- mable DSP. The easy to use SigmaStudio™ software allows the user to graphically configure a custom signal processing flow using blocks such as biquad filters, dynamics processors, level controls, and GPIO interface controls. The ADAU1401A programs can be loaded on power-up either from a serial EEPROM through its own self-boot mechanism or from an external microcontroller. On power-down, the current state of the parameters can be written back to the EEPROM from the ADAU1401A to be recalled the next time the program is run. Two Σ-Δ ADCs and four Σ-Δ DACs provide a 98.5 dB analog input to analog output dynamic. Each ADC has a THD + N of −83 dB, and each DAC has a THD + N of −90 dB. Digital input and output ports allow a glueless connection to additional ADCs and DACs. The ADAU1401A communicates through an I2C® bus or a 4-wire SPI port. FUNCTIONAL BLOCK DIAGRAM 2 2 GPIO INPUT/OUTPUT MATRIX DIGITAL VDD DIGITAL GROUND ANALOG VDD ANALOG GROUND PLL MODE PLL LOOP FILTER CRYSTAL 3.3V 28-/56-BIT, 50MIPS AUDIO PROCESSOR CORE, 40ms DELAY MEMORY 2-CHANNEL ANALOG INPUT 1.8V REGULATOR STEREO ADC FILTA/ ADC_RES RESET/ MODE SELECT CONTROL INTERFACE AND SELF-BOOT 8-CHANNEL DIGITAL INPUT 8-CHANNEL DIGITAL OUTPUT 8-BIT AUX ADC RESET SELF-BOOT DIGITAL IN OR GPIO AUX ADC OR GPIO DIGITAL OUT OR GPIO I2C/SPI AND WRITEBACK DAC DAC 4-CHANNEL ANALOG OUTPUT FILTD/CM PLL CLOCK OSCILLATOR ADAU1401A 3 3 3 2 2 3 3 3 3 5 Figure 1. |
Số phần tương tự - ADAU1401A |
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Mô tả tương tự - ADAU1401A |
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