●Product Details
●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.
●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)
●Data Sheet, Rev. 0, 4/10
●### Features and Benefits
● 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
● See Data Sheet for Additional Information
