ADAU1702 is a 28/56-bit audio processor from ADI, which has two ADCs and four DACs, 25 MIPS processing power, SNR up to 100dB, THD+N up to -83dB.
The ADAU1702 audio processor from Analog Devices integrates a high‑performance 28/56‑bit SigmaDSP core, two high‑resolution ADCs, four DACs, and flexible serial interfaces. It supports sampling rates up to 192 kHz and offers on‑chip voltage regulation for 3.3 V systems, making it suitable for multimedia speakers, automotive head units, and studio monitors.
The device is supplied in a 48‑lead low‑profile quad flat package (LQFP) and operates from 3.3 V analog and 1.8 V digital supplies. Detailed specifications cover analog performance, digital I/O timing, power consumption, and PLL configuration, providing designers with all necessary data for integration.
| ADC Signal‑to‑Noise Ratio | 100 dB |
|---|---|
| DAC Signal‑to‑Noise Ratio | 104 dB |
| Analog Supply Voltage (AVDD) | 3.3 V |
| Digital Supply Voltage (DVDD) | 1.8 V |
| Package Type | 48‑lead plastic LQFP |
| Maximum Sampling Rate | 192 kHz |
| Operating Temperature Range | -40 °C to +130 °C (case) |
The two ADCs provide a signal‑to‑noise ratio of 100 dB.
The four DACs deliver a signal‑to‑noise ratio of 104 dB.
The device uses 3.3 V for analog (AVDD) and 1.8 V for digital (DVDD) supplies.
It is supplied in a 48‑lead low‑profile quad flat package (LQFP).
The processor supports sampling rates up to 192 kHz.