مدار مجتمع (آی سی) آی‌سی صوتی ویژه

Product Attributes

Introduction

BD37544FS is a sound processor with built-in 3-band equalizer for car audio. The functions are stereo input selector (which can switch single and GND isolation), input-gain control, main volume, super bass, 5ch fader volume, LPF/HPF for subwoofer, and mixing input. Moreover, “Advanced switch circuit”, which is an original ROHM technology, can reduce various switching noise (ex. No-signal, low frequency like 20 - 2 & 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, super bass, 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 I2C BUS control.
• It is possible to adjust the gain of the bass, middle, and 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.