Rohm Semiconductor BD37533FV-E2

Description
BD37531FV, BD37532FV, BD37533FV, BD37534FV are sound processors with a builtin 3band equalizer for car audio.
Functions include stereo input selector, inputgain control, main volume, loudness, 5ch fader volume, LPF for subwoofer (except BD37531FV), and mixing input (except BD37531FV, BD37532FV).
Advanced switch circuit reduces various switching noise.
Advanced switch makes control of microcomputer easier and can construct a highquality car audio system.

Features
Reduces switching noise of input gain control, mute, main volume, fader volume, bass, middle, treble, loudness by using advanced switch circuit.
Builtin differential input selector that can make various combinations of singleended/differential input.
Builtin ground isolation amplifier inputs, ideal for external stereo input.
Builtin input gain controller reduces switching noise for volume of a portable audio input.
Decreases the number of external components by builtin 3band equalizer filter, LPF for subwoofer (except BD37531FV), loudness filter.
Possible to control Q, Gv, to of 3band equalizer and fc of LPF, Gv of loudness by IC BUS control freely.
Bass, middle, treble can have a gain adjustment quantity of ±20dB and 1 dB step gain adjustment.
Terminals for the subwoofer outputs are equipped, and the audio signal outputs of front, back, and subwoofer can be chosen with the 12C BUS control.
Builtin mixing input, mixing attenuator. (except BD37531FV, BD37532FV)
BiCMOS process is suitable for the design of low current and low energy.
Package is SSOP828. Putting inputterminals together and outputterminals together can make PCB layout easier and can make the area of PCB smaller.
Possible to control by 3.3V/5V for IC BUS.

Applications
Optimal for car audio.
Can also be used for audio equipment of mini Compo, micro Compo, TV, etc.