ADAU1445/ADAU1446 is a fully programmable audio digital signal processor (DSP) with a flexible audio routing matrix for enhanced sound processing. The device features SigmaStudio, a proprietary graphical programming tool for the development of custom signal flows.
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.
| 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 |
The device supports a sample rate up to 192 kHz.
Functionality is guaranteed from –40 °C to +105 °C ambient.
The processor provides 24 digital input and output channels.
The SigmaDSP core runs at 172 MHz.