AK4438

[AK4438] AK4438 108dB 768kHz 32bit 8-Channel Audio DAC 1. General Description The AK4438 is an 8-channel 32-bit DAC which corresponds to digital audio systems. An internal circuit includes newly developed 32-bit Digital Filter achieving short group delay and high quality sound. It corresponds to a 768kHz PCM input at maximum, suitable for play backing high resolution audio sources that are becoming widespread in network audios, USB-DACs and Car Audio Systems. In addition, “OSR-Doubler” technology is newly adopted, making the AK4438 capable of supporting wide range signals and achieving low out-of-band noise while realizing low power consumption. Moreover, the AK4438 has five types of 32-bit digital filters, realizing simple and flexible sound making in wide range of applications. Application: AV Receivers, CD/SACD Players, Network Audios, USB DACs, USB Headphones, Sound Plate/Bars, Car Audios, Automotive External Amplifiers, Measuring Instruments and Control Systems. 2. Features 1. 8ch 32bit DAC - 256 x Over sampling - 32-bit High Quality Sound Short Delay Digital Filter - Single-ended Output, Smoothing Filter - THD+N: 91dB - DR, S/N: 108dB - Channel Independent Digital Volume Control (0dB～-127dB, 0.5dB Step, Mute) - Soft Mute - De-emphasis Filter (supporting 32kHz, 44.1kHz and 48kHz) - I/F Format: MSB justified, LSB justified, I2S, TDM - Zero Detection 2. Sampling Frequency - Normal Speed Mode: 8kHz to 48kHz - Double Speed Mode: 48kHz to 96kHz - Quad Speed M...