Description

The ADAU1772BCPZ is a single-chip audio system that combines a 28-/56-bit audio DSP, ADCs, DACs, and microcontroller-like control interfaces. It provides signal processing capabilities such as equalization, crossover, bass enhancement, multiband dynamics processing, delay compensation, speaker compensation, and stereo image widening. This allows for improved audio quality by compensating for limitations of speakers, amplifiers, and listening environments.

Specifications and features

• 28-/56-bit, 25 MIPS digital audio processor
• Two ADCs: SNR of 100 dB, THD + N of −83 dB
• Four 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 up to 192 kHz supported
• On-chip voltage regulator for compatibility with 3.3 V systems
• 48-lead, plastic LQFP

Application Scenarios

The ADAU1772BCPZ can be used in various audio applications including:

• 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)

Comparison

- Combines multiple audio components in a single chip

- Provides advanced signal processing capabilities for improved audio quality

- Fully programmable with SigmaStudio™ graphical tool

- Supports various sampling rates up to 192 kHz

- On-chip voltage regulator for compatibility with 3.3 V systems

- Limited to 48-lead, plastic LQFP package