AK4324VF

Digital To Analog Converters Overview

The AK4324VF is a high-performance stereo 1-bit delta-sigma DAC designed for 96kHz sampling applications in DAT and DVD systems. It integrates a 24-bit digital filter with 128x oversampling, achieving a typical dynamic range of 105dB at 44.1kHz and 98dB at 96kHz. The device features differential analog outputs filtered by a second-order switched-capacitor filter (SCF) to mitigate clock jitter. It supports MSB justified, LSB justified, and I2S serial interfaces with TTL-compatible levels. Operating on a single 4.5V to 5.5V supply, it includes digital de-emphasis, soft mute, and zero detection functions within a compact 24-pin VSOP package.

Digital To Analog Converters Feature Summary

• Stereo 1-bit DAC architecture with 128x oversampling and 24-bit digital filter
• Integrated second-order switched-capacitor filter (SCF) for high jitter tolerance
• Supports sampling rates up to 96kHz with digital de-emphasis for 32/44.1/48/96kHz
• Flexible serial interface supporting MSB justified, LSB justified, and I2S formats
• Differential analog outputs with built-in soft mute and channel-separated zero detection

Digital To Analog Converters Applications

• Digital Audio Tape (DAT) recorders and players
• DVD audio playback systems
• High-fidelity audio processing equipment requiring low distortion
• Professional audio interfaces utilizing 96kHz sampling rates

Digital To Analog Converters Procurement Notes

Verify the specific ordering suffix 'VF' corresponds to the 24-pin VSOP package with a 0.65mm pitch as defined in the manufacturer's ordering guide. Confirm that the voltage reference pin (VREF) is properly decoupled with a 0.1uF ceramic capacitor connected to AVDD during implementation. Ensure all input pins except DFS and CKS are tied to defined logic levels to prevent floating states.

Digital To Analog Converters Selection Notes

Select this component for designs requiring a 1-bit DAC solution with integrated SCF filtering to reduce external component count. It is suitable for systems operating with a single 5V analog supply. Designers must account for the group delay of approximately 27.2/fs due to the digital filter. Ensure the master clock frequency aligns with the selected speed mode (Normal or Double) via the CKS and DFS pin configurations.

Digital To Analog Converters Part Context

The AK4324 is part of Asahi Kasei Microsystems' dedicated DAC family focused on high-resolution audio conversion. The 'VF' suffix specifically denotes the 24-pin VSOP plastic package variant. This model utilizes a delta-sigma modulation technique to achieve monotonicity and low distortion without adjustment, distinguishing it from traditional R-2R ladder DACs.

Digital To Analog Converters Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. When evaluating alternatives, verify compatibility with the required 24-bit resolution, 96kHz maximum sampling rate, and the specific 24-pin VSOP footprint.