مدار مجتمع (آی سی) آی‌سی صوتی ویژه

Product Attributes

Introduction

BD37534FV is a sound processor with built-in 3-band equalizer for car audio. A stereo input selector is available that functions to switch single end input and ground isolation input, input-gain control, main volume, loudness, 5ch fader volume, LPF 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 20Hz & large signal inputs). Also, “Advanced switch” makes microcomputer control easier, and constructs a high quality car audio system.

Features

• Reduced switching noise of input gain control, mute, main volume, fader volume, bass, middle, treble, loudness 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 volume switching noise of a portable audio input
• Decreased number of external components due to built-in 3-band equalizer filter, LPF for subwoofer and loudness filter
• It is possible to freely control the Q, Gv, fo of the 3-band equalizer and fc of the LPF and Gv of the loudness through the I²C BUS control
• A gain adjustment quantity of ±20dB with a 1 dB step gain adjustment is possible for the bass, middle and treble
• Equipped with terminals for the subwoofer outputs. Also, the audio signal outputs of the front, rear and subwoofer can be chosen using the I²C BUS control
• Built-in mixing input and mixing attenuator
• Energy-saving design resulting in low current consumption is achieved by utilizing the BiCMOS process
• It has the advantage of quality over scaling down the power heat control of the internal regulators
• Input pins and output pins are organized and separately laid out to keep the signal flow in one direction. This consequently simplifies the pattern layout of the set board and decreases the board dimensions
• It is possible to control the I²C BUS with 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.