Overview
The ADAU1446YSTZ-3A-RL, produced by Analog Devices Inc., is a SigmaDSP® Digital Audio Processor designed for high flexibility and advanced audio processing capabilities. This device is part of the ADAU1442/ADAU1445/ADAU1446 family, which offers robust audio signal processing and routing features. The ADAU1446 is particularly notable for its lack of asynchronous sample rate converters (ASRCs) and its packaging in a 100-lead LQFP (14mm x 14mm).
Key Specifications
| Specification | Details |
|---|---|
| Processor Type | SigmaDSP® Digital Audio Processor |
| Processing Capability | Full 28-bit processing (56-bit in double-precision mode) |
| Package Type | 100-Lead LQFP (14mm x 14mm) |
| Operating Temperature | -40°C to +105°C |
| Digital Supply Voltage | 1.8 V (with on-board voltage regulator for 3.3 V systems) |
| Clock Domains | One clock domain |
| Serial Data I/O | I²S, TDM (4-, 8-, or 16-channel) |
| Sample Rate Converters | No ASRCs |
Key Features
- Flexible Audio Routing Matrix (FARM): Allows multiplexing inputs from multiple sources running at various sample rates to or from the SigmaDSP core.
- Advanced Audio Processing: Includes capabilities for speaker equalization, multiband compression, limiting, and third-party branded algorithms.
- Control and Configuration: Can be controlled via SPI/I²C port or self-boot from an external EEPROM.
- Multipurpose Pins: Bank of MP pins for general-purpose digital I/Os or inputs to the 4-channel auxiliary control ADC.
- Graphical Development Tool: Supported by SigmaStudio graphical development environment for fast development of custom signal flows.
Applications
The ADAU1446 is suitable for a wide range of audio processing applications, including professional audio equipment, consumer electronics, automotive audio systems, and any system requiring advanced digital audio signal processing and flexible routing capabilities. Its ability to compensate for real-world limitations of speakers, amplifiers, and listening environments makes it particularly valuable in scenarios where high-quality audio is critical.
Q & A
- What is the ADAU1446YSTZ-3A-RL?
The ADAU1446YSTZ-3A-RL is a SigmaDSP® Digital Audio Processor from Analog Devices Inc., designed for advanced audio signal processing and flexible routing capabilities.
- What is the key difference between the ADAU1446 and other models in the series?
The ADAU1446 differs from the ADAU1442 and ADAU1445 in that it contains no asynchronous sample rate converters (ASRCs) and is packaged in an LQFP, whereas the others have ASRCs and are packaged in TQFP.
- What is the operating temperature range of the ADAU1446?
The operating temperature range is -40°C to +105°C.
- How is the digital supply voltage managed?
The digital supply voltage must be set to 1.8 V, but the device includes an on-board voltage regulator to support systems with a 3.3 V supply.
- What types of serial data I/O does the ADAU1446 support?
The device supports I²S and TDM (4-, 8-, or 16-channel) serial data I/O.
- Can the ADAU1446 be controlled without a microcontroller?
Yes, the DSP can self-boot from an external EEPROM in a system with no microcontroller.
- What development tool is used for programming the ADAU1446?
The SigmaStudio graphical development environment is used for programming and developing custom signal flows.
- What are some common applications of the ADAU1446?
Common applications include professional audio equipment, consumer electronics, and automotive audio systems.
- How does the flexible audio routing matrix (FARM) enhance system flexibility?
The FARM allows inputs from multiple sources running at various sample rates to be routed to the SigmaDSP core or to any of the ASRC outputs, reducing signal routing and clocking issues.
- What is the significance of the multipurpose (MP) pins on the ADAU1446?
The MP pins can be used as general-purpose digital I/Os or as inputs to the 4-channel auxiliary control ADC.
