AD1980 AC '97 SoundMAX ® Codec is a codec chip from Analog Devices. It supports AC '97 2.3 standard, has 6 DAC channels, supports 5.1 surround sound, supports S/PDIF output, integrates a stereo headphone amplifier, supports variable rate audio and double rate audio (fS = 96 kHz), dynamic range greater than 90 dB, 20-bit PCM DAC, line-level mono “phone” input, high quality CD input, selectable MIC input with preamp, AUX and Line_In stereo inputs, external amplifier power-down control, power management modes, 48-lead LQFP package.
The AD1980 is an AC'97‑compatible audio codec that provides six DAC channels for 5.1 surround sound, integrated headphone amplification, and a programmable parametric equalizer. It supports sample rates from 7 kHz up to 96 kHz and includes both analog and digital power supplies.
The document contains a functional block diagram, full electrical specifications, pin‑out tables, timing diagrams, absolute‑maximum ratings, and ordering information for the 48‑lead LQFP package. It is intended for hardware designers integrating the codec into audio systems.
| Sample Rate | 48 kHz |
|---|---|
| ADC Resolution | 16 Bits |
| DAC Resolution | 20 Bits |
| DAC Dynamic Range | 90 dB |
| Analog Supply Voltage (AVpp) | 4.75 V – 5.25 V |
| Digital Supply Voltage (DVpp) | 3.15 V – 3.45 V |
| Input Impedance | 20 kΩ |
| Output Impedance | 800 Ω |
| Package | 48‑Lead LQFP |
The AD1980 is supplied in a 48‑lead LQFP package.
The analog supply (AVpp) must be between 4.75 V and 5.25 V.
The DAC provides a dynamic range of 90 dB.
The BIT_CLK frequency is 12.288 MHz.