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ADAU1401YSTZ-RL

更新时间: 2024-01-15 07:46:19
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描述
SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs

ADAU1401YSTZ-RL 数据手册

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SigmaDSP 28-/56-Bit Audio Processor  
with Two ADCs and Four DACs  
ADAU1401  
FEATURES  
GENERAL DESCRIPTION  
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  
The ADAU1401 is a complete single-chip audio system with a  
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  
limitations of speakers, amplifiers, and listening environments,  
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  
providing dramatic improvements in perceived audio quality.  
Its signal processing 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 ADAU1401 is a fully programmable 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.  
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  
APPLICATIONS  
ADAU1401 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  
ADAU1401 to be recalled the next time the program is run.  
Multimedia speaker systems  
MP3 player speaker docks  
Automotive head units  
Minicomponent stereos  
Digital televisions  
Studio monitors  
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 ADAU1401 communicates through an  
I2C® bus or a 4-wire SPI port.  
Speaker crossovers  
Musical instrument effects processors  
In-seat sound systems (aircraft/motor coaches)  
FUNCTIONAL BLOCK DIAGRAM  
PLL  
DIGITAL DIGITALANALOG ANALOG PLL LOOP  
VDD GROUND VDD GROUND MODE FILTER  
CRYSTAL  
2
3.3V  
3
3
3
3
3
CLOCK  
OSCILLATOR  
1.8V  
REGULATOR  
PLL  
FILTD/CM  
ADAU1401  
2
2-CHANNEL  
ANALOG  
INPUT  
DAC  
DAC  
STEREO  
ADC  
4-CHANNEL  
ANALOG  
OUTPUT  
28-/56-BIT, 50MIPS  
AUDIO PROCESSOR CORE  
40ms DELAY MEMORY  
FILTA/  
ADC_RES  
2
CONTROL  
RESET/  
MODE  
SELECT  
8-CH  
DIGITAL  
INPUT  
8-BIT  
AUX  
ADC  
8-CH  
DIGITAL  
OUTPUT  
INTERFACE  
AND  
GPIO  
SELFBOOT  
INPUT/OUTPUT MATRIX  
5
4
4
4
2
RESET SELF  
BOOT  
I C/SPI  
DIGITAL IN AUX ADC DIGITAL OUT  
AND  
WRITEBACK  
OR  
OR  
OR  
GPIO  
GPIO  
GPIO  
Figure 1.  
Rev. 0  
Information furnished by Analog Devices is believed to be accurate and reliable. However, no  
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other  
rights of third parties that may result from its use. Specifications subject to change without notice. No  
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.  
Trademarks and registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2007 Analog Devices, Inc. All rights reserved.  
 

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