AD1984 is a high-definition audio SoundMAX® Codec produced by Analog Devices. The chip has four 192 kHz DAC/ADCs, four 192 kHz digital microphone channels, S/PDIF output, etc.
The AD1984 is a high‑definition audio codec that integrates four 192 kHz DACs and ADCs, a four‑channel digital microphone interface, S/PDIF output, and auxiliary pins for headphones and PCBeep. It is offered in a 48‑lead Pb‑free LFCSP package for desktop and notebook PCs.
The document provides detailed electrical specifications, pin‑out tables, power‑down states, absolute maximum ratings, and mechanical dimensions, along with test conditions and performance metrics such as THD, SNR, and supply requirements.
| Supported Sample Rates | 8 kHz – 192 kHz (including 44.1, 48, 96, 176.4, 192 kHz) |
|---|---|
| Resolution | 24 bits |
| DAC THD+N (Line Out) | -86 dB |
| DAC Signal‑to‑Noise Ratio | 96 dB |
| Analog Supply Voltage | 3.3 V ±5 % |
| Package | 48‑Lead LFCSP_VQ (Pb‑free) |
The AD1984 supports sample rates from 8 kHz up to 192 kHz, including common rates such as 44.1 kHz, 48 kHz, 96 kHz, 176.4 kHz and 192 kHz.
The analog supply voltage is specified as 3.3 V with a tolerance of ±5 %.
The DAC line‑out THD+N is rated at –86 dB.