Overview
The ADAU1702JSTZ, produced by Analog Devices Inc., is a comprehensive single-chip audio system that integrates a 28-/56-bit audio DSP, two Σ-Δ ADCs, four Σ-Δ DACs, and microcontroller-like control interfaces. This device is designed to provide high-quality audio signal processing, comparable to that found in high-end studio equipment. It supports various audio enhancements such as equalization, crossover, bass enhancement, multiband dynamics processing, delay compensation, speaker compensation, and stereo image widening. The ADAU1702 is fully programmable using the SigmaStudio software, allowing users to configure custom signal processing flows graphically.
Key Specifications
| Parameter | Min | Typ | Max | Unit | Description |
|---|---|---|---|---|---|
| ADCs | 2 | Σ-Δ ADCs with THD + N of −83 dB | |||
| DACs | 4 | Σ-Δ DACs with THD + N of −90 dB | |||
| Analog Input to Analog Output Dynamic Range | 98.5 dB | dB | |||
| Package | 48-Lead LQFP (7mm x 7mm) | ||||
| Operating Voltage | 1.62 | 1.8 | 1.98 | V | DVDD range |
| Operating Voltage (AVDD) | 2.97 | 3.63 | V | AVDD range | |
| Temperature Range | −40°C | +130°C | °C | Case temperature range | |
| Communication Interfaces | I2C bus or 4-wire SPI port |
Key Features
- 28-/56-bit audio DSP with high-quality signal processing capabilities.
- Two Σ-Δ ADCs and four Σ-Δ DACs providing a 98.5 dB analog input to analog output dynamic range.
- Support for various audio processing functions including equalization, crossover, bass enhancement, multiband dynamics processing, delay compensation, speaker compensation, and stereo image widening.
- Fully programmable using SigmaStudio software for custom signal processing flows.
- Microcontroller-like control interfaces.
- On-chip voltage regulator compatible with 3.3 V systems.
- Glueless connection to additional ADCs and DACs through digital input and output ports.
- Communication through I2C bus or 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).
Q & A
- What is the ADAU1702JSTZ?
The ADAU1702JSTZ is a single-chip audio system with a 28-/56-bit audio DSP, two Σ-Δ ADCs, four Σ-Δ DACs, and microcontroller-like control interfaces.
- What are the key audio processing functions of the ADAU1702JSTZ?
The device supports equalization, crossover, bass enhancement, multiband dynamics processing, delay compensation, speaker compensation, and stereo image widening.
- How is the ADAU1702JSTZ programmed?
The ADAU1702JSTZ is fully programmable using the SigmaStudio software, which allows users to configure custom signal processing flows graphically.
- What is the dynamic range of the analog input to analog output of the ADAU1702JSTZ?
The dynamic range is 98.5 dB.
- What are the THD + N values for the ADCs and DACs?
Each ADC has a THD + N of −83 dB, and each DAC has a THD + N of −90 dB.
- What communication interfaces does the ADAU1702JSTZ support?
The device communicates through an I2C bus or a 4-wire SPI port.
- What is the operating voltage range for the ADAU1702JSTZ?
The operating voltage range is 1.62 V to 1.98 V for DVDD and 2.97 V to 3.63 V for AVDD.
- What is the temperature range for the ADAU1702JSTZ?
The temperature range is −40°C to +130°C (case).
- What are some common applications of the ADAU1702JSTZ?
Common applications include multimedia speaker systems, MP3 player speaker docks, automotive head units, minicomponent stereos, digital televisions, studio monitors, and more.
- What package type does the ADAU1702JSTZ come in?
The device comes in a 48-Lead LQFP (7mm x 7mm) package.
