AK4397 is a high-performance 32-bit DAC that supports DVD-Audio's 192kHz sampling mode. It uses a newly developed advanced multi-bit method, which has a higher dynamic range and lower distortion. The built-in switch capacitor filter (SCF) can improve the accuracy degradation caused by clock jitter. The device supports 192kHz PCM input and DSD input, which is very suitable for DVD-Audio, SACD and other systems.
The AK4397 is a high‑performance premium 32‑bit DAC from Asahi Kasei Microdevices. It supports 30 kHz‑216 kHz sampling rates, including 192 kHz PCM and DSD modes, and offers low distortion, wide dynamic range, and a post‑filter with switched‑capacitor technology.
The document provides a complete pin‑out, electrical and analog characteristics, absolute maximum ratings, recommended operating conditions, and handling instructions for unused pins. Revision history and important safety notices are also included. This manual is written in Japanese.
| Sampling rate | 30 kHz – 216 kHz |
|---|---|
| Resolution | 24 bits |
| THD+N | -103 dB |
| Dynamic range / SNR | 120 dB |
| Power supply voltage (analog & digital) | 4.75 V – 5.25 V |
| Analog output voltage (typical) | 2.65 – 2.95 Vpp |
| Typical AVDD+VDDLR current | 32 – 47 mA |
The device supports sampling rates from 30 kHz up to 216 kHz, including 192 kHz PCM and DSD modes.
Unused input/output pins must be set as described in the document, either left open or connected to VSS4 according to the mode.
The absolute maximum ratings for the analog supplies are –0.3 V to 6.0 V for AVDD, VDDLR, and DVDD.
Typical operating voltages are 4.75 V (minimum) to 5.23 V (maximum) for AVDD, VDDLR, and DVDD.