Overview
The ADAU1401YSTZ, produced by Analog Devices Inc., is a comprehensive single-chip audio system. It integrates a 28-/56-bit audio DSP, two Σ-Δ ADCs, four Σ-Δ DACs, and microcontroller-like control interfaces. This chip is designed to provide advanced signal processing capabilities, including equalization, crossover, bass enhancement, multiband dynamics processing, delay compensation, speaker compensation, and stereo image widening. These features enable significant improvements in perceived audio quality by compensating for real-world limitations of speakers, amplifiers, and listening environments.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Comments |
|---|---|---|---|---|---|
| Sampling Rates | - | - | 192 kHz | - | - |
| ADC THD + N | - | - | -83 dB | - | - |
| DAC THD + N | - | - | -90 dB | - | - |
| Analog Input to Analog Output Dynamic Range | - | - | 98.5 dB | - | - |
| Input Voltage, High (VIH) | 2.0 | - | IOVDD | V | - |
| Input Voltage, Low (VIL) | 0.8 | - | - | V | - |
| Input Leakage, High (IIH) | - | - | 1 μA | - | Excluding MCLKI |
| High Level Output Voltage (VOH), IOH = 2 mA | - | - | 2.0 V | - | - |
| Operating Temperature Range | -40°C | - | +130°C | - | Case temperature |
Key Features
- 28-/56-bit audio DSP for advanced signal processing
- Two Σ-Δ ADCs and four Σ-Δ DACs
- Support for sampling rates up to 192 kHz
- On-chip voltage regulator compatible with 3.3 V systems
- Microcontroller-like control interfaces
- Signal processing includes equalization, crossover, bass enhancement, multiband dynamics processing, delay compensation, speaker compensation, and stereo image widening
- Glueless connection to additional ADCs and DACs through digital input and output ports
- Communication through I2C® bus or 4-wire SPI port
- Programmable using SigmaStudio™ software
- Self-boot mechanism from serial EEPROM or external microcontroller
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)
Q & A
- What is the ADAU1401YSTZ?
The ADAU1401YSTZ is a single-chip audio system produced by Analog Devices Inc., featuring a 28-/56-bit audio DSP, two Σ-Δ ADCs, four Σ-Δ DACs, and microcontroller-like control interfaces.
- What are the key signal processing capabilities of the ADAU1401YSTZ?
The ADAU1401YSTZ supports signal processing such as equalization, crossover, bass enhancement, multiband dynamics processing, delay compensation, speaker compensation, and stereo image widening.
- What is the maximum sampling rate supported by the ADAU1401YSTZ?
The ADAU1401YSTZ supports sampling rates up to 192 kHz.
- How does the ADAU1401YSTZ communicate with other devices?
The ADAU1401YSTZ communicates through an I2C® bus or a 4-wire SPI port.
- What is the dynamic range of the analog input to analog output of the ADAU1401YSTZ?
The dynamic range is 98.5 dB.
- What are the typical applications of the ADAU1401YSTZ?
Applications include multimedia speaker systems, MP3 player speaker docks, automotive head units, minicomponent stereos, digital televisions, studio monitors, speaker crossovers, musical instrument effects processors, and in-seat sound systems.
- How is the ADAU1401YSTZ programmed?
The ADAU1401YSTZ can be programmed using the SigmaStudio™ software, and programs can be loaded on power-up either from a serial EEPROM or an external microcontroller.
- What is the operating temperature range of the ADAU1401YSTZ?
The operating temperature range is from -40°C to +130°C (case temperature).
- What is the THD + N of the ADCs and DACs in the ADAU1401YSTZ?
Each ADC has a THD + N of -83 dB, and each DAC has a THD + N of -90 dB.
- Does the ADAU1401YSTZ have an on-chip voltage regulator?
Yes, the ADAU1401YSTZ has an on-chip voltage regulator compatible with 3.3 V systems.
