AK4112BVM

Overview

The AK4112BVM is a digital audio receiver (DIR) supporting 96kHz sampling and 24-bit resolution. It features four receiver inputs and one through-transmission output, compatible with AES/EBU, IEC958, S/PDIF, and EIAJ CP1201 standards. The device includes an internal low-jitter PLL with a lock range of 22kHz to 108kHz and supports de-emphasis for 32kHz, 44.1kHz, 48kHz, and 96kHz. Operating voltage ranges from 2.7V to 3.6V with 5V-tolerant input buffers. It utilizes a 28-pin SSOP package and operates within a temperature range of -40°C to 85°C.

Feature Summary

• Supports AES/EBU, IEC958, S/PDIF, and EIAJ CP1201 formats
• Four receiver inputs with one through-transmission output
• Internal low-jitter PLL with 22kHz–108kHz lock range
• Automatic Non-PCM stream detection for AC-3/MPEG

Applications

• Digital audio interfacing systems
• AC-3 application solutions when combined with multi-channel codecs
• Consumer and professional mode channel status decoding

Procurement Notes

Verify the specific ordering suffix VM corresponds to the 28-pin SSOP package and tape & reel packaging configuration. Confirm that the component meets the required RoHS compliance standards for the intended manufacturing process. Ensure supply chain documentation aligns with the manufacturer's current production status for this part number.

Selection Notes

Select this component for designs requiring multi-format digital audio reception with integrated clock recovery. The 2.7V to 3.6V supply range suits low-voltage digital systems. Consider the 28-pin SSOP footprint for board space constraints. Verify interface compatibility with downstream codecs or processors using the provided serial or parallel control modes.

Part Context

The AK4112BVM belongs to the AK4112B series of high-feature 96kHz 24-bit digital audio receivers manufactured by Asahi Kasei Microdevices. This series is designed to provide system solutions for digital audio interfaces, particularly in applications requiring robust error handling and non-PCM stream detection capabilities.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Evaluate pin-compatible alternatives only if they support identical protocol standards and electrical characteristics.

FAQ

How does the AK4112B detect Non-PCM streams?

The device automatically detects Non-PCM bit streams by identifying specific sync codes (0x0000, 0x0000, 0x0000, 0x0000, 0xF872, and 0x4E1F). Upon detection, the AUTO pin goes high.

What is the function of the FS96 pin?

The FS96 pin indicates whether the sampling frequency is 96kHz or higher. In RX mode, it goes high for sampling rates of 88.2kHz or more and low for 54kHz or less.

Can the AK4112B operate in both master and slave modes?

Yes, the audio interface supports both master and slave modes. The mode is selected via the DIF0, DIF1, and DIF2 pins or through the serial control interface.