AKM Semiconductor, Inc. Hard To Find - AK4490EQ AK4490EQ

The AK4490EQ is a premium 32-bit dual-channel digital-to-analog converter (DAC) designed for high-resolution audio applications. It supports PCM data rates up to 768kHz and DSD data rates up to 11.2MHz, making it suitable for modern audio playback systems such as AV receivers, USB DACs, and automotive audio systems. The device features a low total harmonic distortion plus noise (THD+N) of -112dB and a dynamic range of 120dB, ensuring high audio fidelity. The AK4490EQ incorporates a switched capacitor filter technology called "OSR Doubler," which minimizes out-of-band noise while maintaining low power consumption. It offers five types of 32-bit digital filters for flexible sound tuning, along with a digital attenuator with 255 levels for precise volume control. The device operates with a power supply range of 3.0V to 3.6V for digital and 4.75V to 7.2V for analog, and is packaged in a 48-pin LQFP format. Its high tolerance to clock jitter and various digital input formats enhance its versatility in different audio applications.