ROHM BD37515FS-E2

BD37513FS is a sound processor with built-in 2-band equalizer for car audio. The functions are 4ch stereo input selector, input-gain control, main volume, loudness, and 4ch fader volume. Moreover, its “Advanced switch circuit”, which is an original ROHM technology, can reduce various switching noise (ex. No-signal, low frequency like 20Hz & large signal inputs). “Advanced switch” makes control of microcomputer easier, supporting the construction of a high quality car audio system.

• Reduce switching noise of input gain control, mute, main volume, fader volume, bass, treble, loudness by using advanced switch circuit.
• Built-in 1 differential input selector and 3 single-ended input selectors
• Built-in ground isolation amplifier inputs, ideal for external stereo input.
• Built-in input gain controller reduces switching noise for volume of a portable audio input.
• Decrease the number of external components due to built-in 2-band equalizer filter and loudness filter. Also, it is possible to control Gv using I²C BUS control.
• It is possible to adjust the gain of the bass and treble up to ±20dB with 1 dB step gain adjustment.
• Energy-saving design resulting in low current consumption, 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.

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