The ADAU1401A is a 28/56-bit, 50 MIPS digital audio processor with two ADCs and four DACs.
The ADAU1401A is a single‑chip audio system that combines a 28‑/56‑bit SigmaDSP, two sigma‑delta ADCs, four sigma‑delta DACs, and a microcontroller‑like control interface. It supports up to 192 kHz sampling rates and offers full double‑precision processing for high‑quality audio applications such as multimedia speaker systems, automotive head units, and digital televisions.
The device operates from a 3.3 V analog supply and a 1.8 V digital supply, includes an on‑chip voltage regulator, and is offered in a 48‑lead LQFP package. Detailed specifications cover analog performance, digital I/O timing, power consumption, temperature range, and automotive‑grade options.
| ADC Signal‑to‑Noise Ratio | 100 dB |
|---|---|
| ADC THD+N | ‑83 dB |
| DAC Signal‑to‑Noise Ratio | 104 dB |
| DAC THD+N | ‑90 dB |
| Analog Supply Voltage (AVDD) | 3.3 V |
| Digital Supply Voltage (DVDD) | 1.8 V |
| Package | 48‑lead LQFP |
The ADCs provide a signal‑to‑noise ratio of 100 dB.
It uses a 3.3 V analog supply (AVDD) and a 1.8 V digital supply (DVDD).
It is available in a 48‑lead low‑profile quad flat package (LQFP).