The AK5394AVS-E2 is a high-performance 24-bit analog-to-digital converter (ADC) from Asahi Kasei Microsystems (AKM). It is designed for professional audio applications requiring exceptional dynamic range and low distortion. The AK5394AVS-E2 achieves a wide dynamic range and low THD+N performance by utilizing AKM’s enhanced multi-bit delta-sigma architecture. This architecture also provides inherent anti-aliasing characteristics and requires a simple external analog filter, simplifying system design and reducing component count.

Applications:

• Professional audio recording equipment
• High-end audio interfaces
• Mixing consoles
• Digital audio workstations (DAWs)
• Audio measurement equipment

Features:

• 24-bit resolution
• High dynamic range (typically 123dB)
• Low THD+N (typically -110dB)
• Sampling rates up to 216kHz
• Internal oscillator or external clock operation
• Selectable digital filter characteristics
• DSD (Direct Stream Digital) input support
• Differential input for high common-mode noise rejection
• On-chip high pass filter for DC offset cancellation
• Small QFN package for space-saving applications

Benefits:

• Superior audio quality: Enables high-fidelity audio recording and playback with exceptional clarity and detail.
• Reduced system complexity: Integrated features like on-chip filters and clock generation simplify design and lower the bill of materials.
• High performance: Provides wide dynamic range and low distortion, meeting the demanding requirements of professional audio applications.
• Flexible configuration: Selectable filter characteristics and clocking options allow optimization for various system requirements.
• Compact size: The QFN package enables integration into space-constrained devices.

The AK5394AVS-E2 offers a variety of digital filter options, selectable via control pins, to optimize performance for different audio characteristics. The integrated high-pass filter eliminates DC offsets, preventing unwanted low-frequency noise. The device's differential input architecture further enhances noise immunity, contributing to overall audio clarity. It operates on both single and dual power supplies, typically +5V for analog and +3.3V for digital, and features a serial audio interface for communication with digital signal processors (DSPs) or microcontrollers.