Overview
The ADAU1701JSTZ-RL, 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. The ADAU1701 is fully programmable using the SigmaStudio™ software, allowing users to configure custom signal processing flows graphically.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Test Conditions/Comments |
|---|---|---|---|---|---|
| ADC THD + N | -83 | - | - | dB | - |
| DAC THD + N | -90 | - | - | dB | - |
| Dynamic Range (Analog Input to Analog Output) | 98.5 | - | - | dB | - |
| AUX ADC Full-Scale Analog Input | 2.8 | 3.0 | 3.1 | V | - |
| Input Impedance (AUX ADC) | 17.8 | 30 | 42 | kΩ | - |
| DVDD Voltage | 1.7 | 1.8 | 1.84 | V | - |
| AVDD Voltage | 2.97 | - | 3.63 | V | - |
| Operating Temperature Range | -40 | - | 130 | °C | Case temperature |
Key Features
- 28-/56-bit audio DSP with 50 MIPS processing capability
- Two Σ-Δ ADCs and four Σ-Δ DACs providing high dynamic range and low THD + N
- On-chip voltage regulator for compatibility with 3.3 V systems
- Advanced signal processing capabilities including equalization, crossover, bass enhancement, multiband dynamics processing, delay compensation, speaker compensation, and stereo image widening
- Programmable using SigmaStudio™ software with graphical configuration of signal processing flow
- Self-boot mechanism from serial EEPROM or external microcontroller
- Communication through I2C® bus or 4-wire SPI port
- Digital input and output ports for glueless connection to additional ADCs and DACs
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 ADAU1701JSTZ-RL?
The ADAU1701JSTZ-RL is a single-chip audio system from 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 ADAU1701?
The ADAU1701 offers advanced signal processing including equalization, crossover, bass enhancement, multiband dynamics processing, delay compensation, speaker compensation, and stereo image widening.
- How is the ADAU1701 programmed?
The ADAU1701 is programmed using the SigmaStudio™ software, which allows graphical configuration of the signal processing flow.
- What communication interfaces does the ADAU1701 support?
The ADAU1701 communicates through an I2C® bus or a 4-wire SPI port.
- What is the dynamic range of the ADAU1701?
The ADAU1701 provides a dynamic range of 98.5 dB from analog input to analog output.
- What are the typical applications of the ADAU1701?
The ADAU1701 is used in 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 does the ADAU1701 handle power-up and power-down operations?
The ADAU1701 can load programs on power-up from a serial EEPROM through its self-boot mechanism or from an external microcontroller. On power-down, the current state of the parameters can be written back to the EEPROM.
- What is the operating temperature range of the ADAU1701?
The ADAU1701 operates within a temperature range of -40°C to 130°C (case temperature).
- Does the ADAU1701 have on-chip voltage regulation?
Yes, the ADAU1701 includes an on-chip voltage regulator for compatibility with 3.3 V systems.
- Can the ADAU1701 connect to additional ADCs and DACs?
Yes, the ADAU1701 has digital input and output ports that allow glueless connection to additional ADCs and DACs.
