BM5481MUV数据手册ROHM中文资料规格书

描述 Description

BM5481MUV是针对超薄电视等省空间、节能用途而开发的，搭载20W+20W DSP(数字语音处理器)的全数字D类扬声器放大器。采用顶尖的BCD(Bipolar, CMOSand DMOS)工艺技术，将输出功率段的导通电阻和接线电阻所产生的内部损失减至极限，实现了高效率。并采用小型背面散热型功率封装，具备低功耗、低发热量，可实现总体最大40W输出。搭载高性能DSP，是同时满足音响类系统大幅小型化、薄型化以及高性能、高音质播放两方面需求的产品。

特性 Features

・ This IC includes the DSP (digital sound processor) for Audio signal processing for Flat TVs. P2Bass+( pseudo bass), 16 Band P-EQ, Level DRC, 2 Band DRC, Surround, etc.
・ This IC has one input systems of digital audio interface. (No needs of Master Clock) - I2S / LJ / RJ format - LRCLK: 32k/44.1k/48KHz - BCLK: 32fs / 48fs / 64fs - SDATA: 16 / 20 / 24bit
・ With wide range of power supply voltage.
・ The monaural output that can reduce the number of external parts can be used.
・ With high efficiency and low heat dissipation contributing to miniaturization, slim design, and also power saving of the system.
・ Eliminates pop-noise generated during the power supply on/off. High quality muting performance is realized by using the soft-muting technology.
・ This IC is built-in with various protection functions for highly reliability design. - High temperature protection - Over voltage protection, Under voltage protection - Output short protection - DC voltage protection - Clock stop protection
・ Small package
・ The Audio output amplifier of the unnecessary output coupling capacitor. - Adjust gain (Via external parts) - 2Vrms output (SVDD=3.3V, RL =10kΩ) or 35mW output (SVDD=3.3V, RL =32Ω)