AK4115VQ

Overview

The AK4115VQ is a high-feature 24-bit stereo digital audio transceiver supporting sampling rates up to 216kHz. It integrates an AES3, IEC60958, S/PDIF compatible receiver and transmitter with an internal low jitter analog PLL. The device features eight receiver inputs, including one differential channel, and two transmission outputs with differential support. It includes automatic detection for Non-PCM bit streams such as Dolby Digital and MPEG, DTS-CD detection, and de-emphasis for 32kHz, 44.1kHz, and 48kHz. Control is managed via a serial µP interface (4-wire or I²C) or parallel pin-strapping. Operating voltage ranges from 2.7V to 3.6V with 5V logic tolerance, housed in a 64-pin LQFP package.

Feature Summary

• Supports synchronous and asynchronous operation modes for flexible system integration.
• Includes dual crystal oscillators and selectable clock sources for precise timing recovery.
• Features comprehensive detection functions for non-PCM formats and sampling frequencies.
• Provides configurable block start, channel status, user bit, and validity bit handling.

Applications

• Digital audio equipment requiring multi-channel input selection
• Professional audio interfaces supporting AES3 and S/PDIF standards
• Systems utilizing word clock synchronization via ELRCK pin

Procurement Notes

Verify the specific ordering suffix matches the required temperature range of -20°C to +85°C. Confirm that the 64-pin LQFP package dimensions align with the target PCB layout. Ensure power supply decoupling meets the recommended operating conditions for AVDD, DVDD, OVDD, and TVDD pins to maintain signal integrity.

Selection Notes

Select this component when a single chip solution for both digital audio reception and transmission is required. It is suitable for designs needing support for sampling rates up to 216kHz and compatibility with various digital audio interfaces. Consider the available control interfaces and pin configurations to ensure compatibility with the host microcontroller or system architecture.

Part Context

The AK4115VQ belongs to Asahi Kasei Microdevices' family of digital audio interface transceivers. It is designed to bridge digital audio sources with processing units, offering robust clock recovery and format detection capabilities. This part is commonly used in professional audio gear and high-end consumer electronics where signal fidelity and interface flexibility are critical.

Replacement Considerations

Check for direct replacements within the AKM portfolio that offer similar pinouts and feature sets. Verify compatibility with existing firmware or control logic if substituting with variants having different control interface options or package types.

FAQ

What is the maximum sampling frequency supported by the AK4115VQ?

The AK4115VQ supports sampling frequencies up to 216kHz.

Can the AK4115VQ detect non-PCM bit streams automatically?

Yes, it can automatically detect Non-PCM bit streams such as Dolby Digital and MPEG.

How many receiver channels does the AK4115VQ support?

It supports eight receiver inputs, with one channel capable of differential input.