The AK4358 is an eight-channel 24-bit digital-to-analog converter (DAC) designed for digital audio systems. It uses AKM's advanced multi-bit architecture for its modulator, delivering a wide dynamic range while preserving linearity for improved THD+N performance. The AK4358 has full differential SCF outputs, removing the need for AC coupling capacitors and increasing performance for systems with excessive clock jitter. The AK4358 accepts 192kHz PCM data and 1-bit DSD data, making it ideal for a wide range of applications including DVD-Audio and SACD.
The AK4358 is an eight‑channel, 24‑bit digital‑to‑analog converter (DAC) that supports PCM sampling rates from 8 kHz up to 192 kHz and 1‑bit DSD input. It features differential SCF outputs, a low‑distortion architecture, and a programmable digital attenuator.
The document provides full pin descriptions, absolute maximum ratings, recommended operating conditions, analog and digital performance characteristics, filter specifications, and timing diagrams for both PCM and DSD interfaces.
| Sampling Rate | 8 kHz – 192 kHz |
|---|---|
| Resolution | 24 bits |
| THD+N | -94 dB |
| Analog Power Supply (AVDD) | 4.75 V – 5.25 V |
| Digital Power Supply (DVDD) | 4.75 V – 5.25 V |
| Input Current (any pin) | ≤ +10 mA |
| Operating Temperature | -40 °C to 85 °C |
Both the analog (AVDD) and digital (DVDD) supplies should be between 4.75 V and 5.25 V.
The device supports sampling rates up to 192 kHz.
The THD+N is specified as -94 dB.