BD37033FV

General Description

BD37033FV-M is sound processors for car audio. The

functions are stereo input selector with single end 3 and

ground isolation input 2, volume, 3-band parametric

equalizer, loudness, 6ch fader volume, LPF for

subwoofer, anti-aliasing-filter, Mixing volume. Moreover,

“Advanced switch circuit”, that is ROHM original

technology, can reduce various switching noise (ex.

No-signal, low frequency likes 20Hz & large signal

inputs).  “Advanced  switch”  makes  control  of

microcomputer easier, and can construct high quality car

audio system.

Features

? Reduce switching noise of volume, mute, fader

volume, bass, middle, treble, loudness by using

advanced switch circuit [Possible to control all

steps].

? Built-in input selector (single 3 / diff 2).

? Decrease the number of external components by

built-in 3-band equalizer filter, LPF for subwoofer,

loudness filter. And, possible to control Q, Gv, fo

of 3-band equalizer and fc of LPF, Gv, fo of

loudness by I 2 C BUS control freely.

? Built-in mixing volume and anti-aliasing-filter.

? Built-in anti-GSM-noise-filter.

? Package is SSOP-B28. Putting input-terminals

together and output-terminals together can make

PCB layout easier and can makes area of PCB

smaller.

? It is possible to control by 3.3V / 5V for I 2 C BUS.

? AEC-Q100 Qualified.

Applications

? It is the optimal for the car audio. Besides, it is

possible to use for the audio equipment of mini

Compo, micro Compo, TV etc with all kinds.

Key Specifications

? Current upon no signal:  31mA(Typ.)

? Total harmonic distortion:  0.002%(Typ.)

? Maximum input voltage:  2.1Vrms(Typ.)

? Cross-talk between selectors:  100dB(Typ.)

? Ripple rejection  -65dB(Typ.)

? Output noise voltage:  5.5µVrms(Typ.)

? Residual output noise voltage:  3.5µVrms(Typ.)

? Operating Range of Temperature:  -40℃ to +85℃

BD37033FV