AK4136VQ

Overview

The AK4136VQ is a 2-channel asynchronous digital sample rate converter (SRC) designed for high-resolution audio applications. It supports input and output sample rates ranging from 8kHz to 384kHz with a conversion ratio of 1/6 to 12. The device features an internal oscillator, eliminating the need for external master clocks. Key performance metrics include a THD+N of up to -140dB and a dynamic range of 176dB (A-weighted). It operates on a 3.0V to 3.6V supply or 1.7V to 1.9V with an internal LDO disabled. The component is housed in a 48-pin LQFP package and supports I2C/SPI control interfaces.

Feature Summary

• Asynchronous Sample Rate Converter supporting 8kHz to 384kHz input/output rates
• High-performance audio specifications: THD+N up to -140dB, Dynamic Range 176dB (A-weighted)
• Internal oscillator eliminates requirement for external master clocks
• Supports MSB justified, LSB justified, I2S compatible, and TDM interface formats

Applications

• Network Audio systems
• USB DACs and USB Headphones
• Car Audios and Automotive External Amplifiers
• AV Receivers and CD/SACD Players
• Sound Plates/Bars and Bluetooth Headphones

Procurement Notes

Verify the specific ordering suffix against the manufacturer's official datasheet to ensure correct packaging and temperature grade. Confirm power supply configuration requirements, as the device supports both internal LDO mode (3.0-3.6V) and external DV18 supply mode (1.7-1.9V). Ensure all unused input pins are connected to DVSS to prevent floating states during operation.

Selection Notes

Select this component when interfacing between different digital audio sources requiring sample rate conversion up to 384kHz. Choose the internal LDO mode for simplified design if a 3.3V supply is available. Opt for the external DV18 mode if lower voltage operation is required. Verify that the system clock requirements align with the supported master clock frequencies (128/192/256/384/512/768fso) in master mode.

Part Context

The AK4136VQ belongs to the AKM family of digital audio interface transceivers and converters. It is functionally similar to the AK4137 but offers a narrower sample rate range (up to 384kHz vs 768kHz) and lacks DSD-to-DSD conversion capabilities found in higher-end models. It serves as a specialized solution for PCM-based high-resolution audio routing.

Replacement Considerations

The AK4137 is a related model offering extended support up to 768kHz and DSD conversion, but it uses a different pinout and feature set. Direct pin-compatible replacements are not explicitly documented in the provided source material; verify compatibility with alternative SRC ICs based on specific interface and performance requirements.