Hot-selling and scarce ADAU1401YSTZ SigmaDSP 28-/56-Bit Audio Processor with Two ADCs and Four DACs QFP48 spot stock

Product Descriptions

The ADAU1401 is a complete single-chip audio system with a28-/56-bit audio DSP, ADCs, DACs, and microcontroller-like control interfaces. Signal processing includes equalization,crossover, 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, 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.

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. 

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 anI²C® bus or a 4-wire SPI port.

Product 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

Product 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)

Product Specifications

Product Photos

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