ROHM’s 2nd Generation MUS-IC™ Series Audio DAC Chip for Hi-Res Audio Playback with Exclusive HD Monaural Mode

Delivers an authentic listening experience by expressing the three elements of spatial reverberation, quietness, and dynamic range while preserving the natural “texture” of musical instruments

Willich-Münchheide, Germany, January 22, 2025 – 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. (Figure 1) Engineered to maximally extract and accurately convert high-resolution sound data to analog, DAC chips are crucial for determining audio equipment quality. ROHM leverages over 50 years of expertise in audio IC development to establish superior sound quality design technology, offering products such as high-fidelity sound processors and high-quality audio power ICs. 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 for an even more realistic audio experience. 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 befitting a flagship DAC chip, 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. (Figure 2) MUS-IC™ Series DAC Chip Lineup (Figure 3) Online Sales Information Availability: Now Online Distributors: DigiKey™, Mouser™, and Farnell™ The products will be offered at other online distributors as they become available. • Applicable Part No: BD34302EKV • Evaluation Board Part No: BD34302EKV-EVK-001 (Figure 4) DigiKey™, Mouser™ and Farnell™ are trademarks or registered trademarks of their respective companies. MUS-IC™ — ROHM’s Highest Grade Audio ICs Created by combining the “sound quality design technology” with ROHM’s company mission of “Quality First”, “vertically integrated production system”, and “contribution to the musical culture”, MUS-IC™ (official name: ROHM Musical Device “MUS-IC™”) is an audio device brand that represents the ultimate IC solutions developed by ROHM’s team of experienced and dedicated engineers. For more information, please visit ROHM’s Musical Device “MUS-IC™” web page. https://micro.rohm.com/en/mus-ic/ MUS-IC™ is a trademark or registered trademark of ROHM Co., Ltd. Visit ROHM’s Website for More Information https://www.rohm.com/news-detail?news-title=2025-01-22_news_music&defaultGroupId=false In this news release, the term ‘DAC chip’ is used to differentiate it from the DAC found in audio equipment.

About ROHM Semiconductor ROHM Semiconductor is a global company of 467.7 billion yen (3.2 billion US dollars) per March 31st, 2024, with over 23,300 employees. The company develops and manufactures a very large product range from SiC Diodes and MOSFETs, Analog ICs such as Gate Drivers and Power Management ICs to Power Transistors and Diodes to Passive Components. The production of ROHM’s high performing products is taking place in state-of-the-art manufacturing plants in Japan, Germany, Korea, Malaysia, Thailand, the Philippines, and China. ROHM Semiconductor Europe has its Head Office near Dusseldorf serving the EMEA region (Europe, Middle East, and Africa). For further information, please contact www.rohm.com