مدار مجتمع (آی سی) آی‌سی صوتی ویژه

Product Attributes

Introduction

BD37543FS is a sound processor with built-in 3-band equalizer for car audio. The functions are stereo input selector (which can switch single and ground isolation input), input-gain control, main volume, loudness, 5ch fader volume, LPF and HPF for subwoofer and mixing input. Moreover, “Advanced switch circuit”, which is an original technology, can reduce various switching noise (ex. No-signal, low frequency like 20Hz & large signal inputs). Also, “Advanced switch” makes control of microcomputer easier, and can construct a high quality car audio system.

Features

• Reduced switching noise of input gain control, mute, main volume, fader volume, bass, middle, treble, loudness, mixing by using advanced switch circuit.
• Built-in differential input selector that can make various combination of single-ended / differential input.
• Built-in ground isolation amplifier inputs, which is ideal for external stereo input.
• Built-in input gain controller reduces switching noise for volume of a portable audio input.
• Decreased number of external components due to built-in 3-band equalizer filter, LPF for subwoofer, and HPF. It is possible to control Q, GV, fO of 3-band equalizer, and fC of LPF/HPF through the I2C BUS control.
• It is possible to adjust the gain of the bass, middle, treble up to ±20dB with 1 dB step gain adjustment. It is equipped with output terminals for Subwoofer. Moreover, the stereo signal output of the front and rear can also be chosen by the I2C BUS control. Built-in mixing input and mixing attenuator.
• Energy-saving design resulting in low-current consumption is achieved by utilizing the Bi-CMOS process. It has the advantage in quality over scaling down the power heat control of the internal regulators.
• Input terminals and output terminals are organized and separately laid out to keep the signal flow in one direction which results in simpler and smaller PCB layout.
• It is possible to control the I2C BUS by 3.3V / 5V.

Applications

• It is optimal for car audio systems.
• It can also be used for audio equipment of mini Compo, micro Compo, TV, etc.