Rohm’s DAC chip for hi-res audio playback with exclusive HD monaural mode
Rohm has developed the 32-bit D/A converter IC (DAC chip) and evaluation board designed for flagship models in the MUS-IC series optimized for high-resolution audio playback.
Engineered to maximally extract and accurately convert high-resolution sound data to analog, DAC chips are crucial for determining audio equipment quality.
Rohm’s latest product builds on the 1st generation MUS-IC BD34301EKV audio DAC chip, renowned for its sound quality and widely adopted in high-end models from various companies. The BD34302EKV inherits the core design concept behind Rohm’s DAC chip — natural flat sound — and, by adding the three elements of spatial reverberation, quietness, and dynamic range from the MUS-IC series to authentically reproduce the “texture” of musical instruments.
By incorporating a new algorithm for Data Weighted Averaging (DWA), the BD34302EKV achieves a THD+N characteristic of -117dB (THD: -127dB), a key performance indicator that enhances sound quality by achieving a sound quality that conveys a realistic sense of texture. At the same time, the signal-to-noise ratio (SNR) of 130dB provides noise performance while a sampling frequency of up to 1,536kHz allows customers to fully leverage the high-precision calculations of their digital signal processors (DSPs).
In monaural mode, which allocates one DAC chip per channel, Rohm’s proprietary HD (High Definition) monaural mode contributes to smoother, more natural sound. As part of the MUS-IC series, uncompromising craftsmanship has been applied down to the smallest details. Based on years of expertise in sound quality design, the optimal bonding wire material for each terminal of the BD34302EKV was selected to accurately convey the natural “texture” of musical instruments. These features help create the ideal sound sought by high-end audio manufacturers.
