Key facts
- Brand
- Analog Devices
- Model
- ADAU1445
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-08-03
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Analog Devices ADAU1445/ADAU1446 Handbook
The ADAU1445 and ADAU1446 are SigmaDSP digital audio processors offering flexible audio routing, up to eight stereo asynchronous sample‑rate converters, and support for S/PDIF, serial, and TDM interfaces. They are designed for automotive and commercial audio applications such as head units, navigation systems, and DSP amplifiers.
The devices operate with a 172 MHz core clock, provide 24 digital I/O channels, and include a 10‑bit auxiliary ADC. Key specifications include a temperature range of –40 °C to +105 °C, a dynamic range of 139 dB A‑weighted, and support for sample rates up to 192 kHz. Power supplies are 3.3 V AVDD, 1.8 V DVDD, and 3.3 V IOVDD, with on‑chip regulators for 1.8 V generation.
Analog Devices ADAU1445 specifications
| Core clock frequency | 172 MHz |
|---|---|
| Digital I/O channels | 24 |
| Temperature operating range | –40 °C to +105 °C |
| Dynamic range | 139 dB A‑weighted |
| Auxiliary ADC resolution | 10 bits |
All Analog Devices ADAU1445 documents by type
How to use the product for one specific task, with worked examples.
Day-to-day operation, settings and troubleshooting. Start here if the product is already set up.
Questions answered in these manuals
What is the issue with the S/PDIF transmitter validity bit?
The validity bit is internally hardcoded to logic high, which indicates invalid data according to the S/PDIF specification, potentially causing receiving ICs to ignore the audio data.
From: Analog Devices ADAU1442/ADAU1445/ADAU1446 Silicon Anomaly Sheet
How can the S/PDIF validity bit issue be worked around?
Audio data should be routed to the serial ports and then to an I2S-to-S/PDIF transceiver IC instead of connecting directly to the SPDIFO pin.
From: Analog Devices ADAU1442/ADAU1445/ADAU1446 Silicon Anomaly Sheet
What is the maximum sample rate supported by the ADAU1445/1446?
The device supports a sample rate up to 192 kHz.
What is the temperature range for guaranteed operation?
Functionality is guaranteed from –40 °C to +105 °C ambient.