AK4454VN

ADCs/DACs - Special Purpose Overview

The AK4454VN is a 32-bit, 4-channel Premium DAC from Asahi Kasei Microdevices. It supports PCM inputs up to 768kHz and DSD inputs up to 11.2MHz. The device achieves a dynamic range and signal-to-noise ratio of 115dB with a THD+N of -107dB at AVDD=5.0V. It features an OSR-Doubler for low out-of-band noise and includes five selectable digital filters. Power supplies are TVDD (1.7V to 3.6V) and AVDD (3.0V to 5.5V). The component is housed in a 32-pin QFN package and operates within a temperature range of -40°C to +105°C.

ADCs/DACs - Special Purpose Feature Summary

• 32-bit resolution with 115dB Dynamic Range/SNR and -107dB THD+N
• Supports 768kHz PCM and 11.2MHz DSD input formats
• Five digital filter options including Sharp Roll-Off and Short Delay variants
• Integrated Daisy Chain capability for multi-chip synchronization

ADCs/DACs - Special Purpose Applications

• AV Receivers
• CD/SACD Players
• Network Audio Systems
• USB DACs
• Car Audio Systems

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific suffix configuration upon ordering. The standard AK4454VN supports an operating temperature range of -40°C to +105°C when the exposed pad is connected to ground. An alternative variant supporting -40°C to +85°C is available if the exposed pad remains open. Confirm power supply requirements and interface settings match the target system design.

ADCs/DACs - Special Purpose Selection Notes

Select this component for high-resolution audio applications requiring four independent output channels. Ensure the analog supply voltage (AVDD) is set between 3.0V and 5.5V to achieve optimal performance metrics like 115dB SNR. Verify that the host processor supports the required digital interfaces, such as I2S, TDM, or DSD, and can handle the master clock frequencies specified for the desired sampling rates.

ADCs/DACs - Special Purpose Part Context

The AK4454VN belongs to the AK445x series of premium DACs, which also includes the 2-channel AK4452VN, 6-channel AK4456VN, and 8-channel AK4458VN. These devices share similar architectural features, including Velvet Sound technology and OSR-Doubler capabilities, allowing for scalable multi-channel audio solutions across different product tiers.

ADCs/DACs - Special Purpose Replacement Considerations

Direct pin-compatible replacements within the same family include the AK4452VN (2-channel), AK4456VN (6-channel), and AK4458VN (8-channel). When substituting, verify channel count compatibility and ensure the digital interface configuration matches the new part's specifications.