AK5385AVS

ADCs/DACs - Special Purpose Overview

The AK5385AVS is a 24-bit, dual-channel stereo analog-to-digital converter (ADC) designed for high-end audio systems. It utilizes an Enhanced Dual Bit Delta-Sigma modulator architecture to achieve a dynamic range and signal-to-noise ratio of 114dB, with an S/(N+D) of 103dB. The device supports sampling rates from 8kHz to 216kHz and features fully differential analog inputs. It includes a high-performance linear phase digital anti-alias filter and a digital high-pass filter for DC offset cancellation. The component operates with an analog supply of 4.75V to 5.25V and a digital supply of 3.0V to 5.25V, housed in a 28-pin SOP package.

ADCs/DACs - Special Purpose Feature Summary

• 24-bit resolution with 114dB Dynamic Range and 114dB S/N ratio
• Sampling rate range of 8kHz to 216kHz using Enhanced Dual Bit DS technology
• Fully differential analog inputs for improved noise immunity
• Built-in high-performance linear phase digital anti-alias filter with 100dB stopband attenuation

ADCs/DACs - Special Purpose Applications

• High-end AV amplifiers
• AV recorders
• Electronic musical instruments

ADCs/DACs - Special Purpose Procurement Notes

Verify the specific ordering suffix 'VS' corresponds to the 28-pin SOP package with a 1.27mm pitch and an operating temperature range of -10°C to +70°C. Confirm that the source documentation explicitly lists this suffix variant; otherwise, standard family data may apply to similar suffixes like 'VF'. Ensure compatibility with required power supply voltages (AVDD 4.75–5.25V, DVDD 3.0–5.25V).

ADCs/DACs - Special Purpose Selection Notes

Select the AK5385AVS when fully differential input signals are available or required for high-fidelity audio conversion. The device is suitable for applications demanding low distortion and high dynamic range up to 216kHz sampling. Consider the 28-pin SOP package constraints for PCB layout. Note that it is semi-pin compatible with AK5383, AK5393, and AK5394A, allowing for potential board-level upgrades with pin adjustments.

ADCs/DACs - Special Purpose Part Context

The AK5385AVS belongs to the AK5385A series of 24-bit stereo ADCs from Asahi Kasei Microdevices. It shares architectural similarities with the AK5383 and AK5394A but offers distinct performance metrics, such as a higher dynamic range than the AK5383 (114dB vs 110dB). The 'AVS' suffix specifically denotes the SOP package variant, distinguishing it from the VSOP package variant (AK5385AVF).

ADCs/DACs - Special Purpose Replacement Considerations

The AK5385A is semi-pin compatible with the AK5383, AK5393, and AK5394A. Direct replacement requires verifying pin function differences, particularly regarding voltage reference pins (VREFL/R) and calibration controls (ZCAL/CAL), which differ between these models.