6ch Electronic Volume for 5.1ch Car Theater - BD3433K

The BD3433K high performance 6ch electronic volume processor integrates a soft switching circuit that mitigates switching shock noise during a range of conditions, including due to high amplitude input. This makes it particularly well-suited for 5.1ch car surround sound/theater systems.

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part Number
Unit Quantity
Minimum Package Quantity
Packing Type
BD3433K-E2 Active QFP44 1000 1000 Taping Yes
Vcc(Min.)[V] 14.2
Vcc(Max.)[V] 19.0
Iq[mA] 12.0
I/F 3-wire
Outputs 6
Volume Range +23to-79, -∞ (1dB / step)
Number of of single input 5.1chx2
Number of of ISO input 1
Input Gain[dB] 0, 6, 12 (Each F, R)
FADER[dB] +15to-63, -∞ (1dB / step)
THD[%] 0.0010
Output Noise[µVrms] 3
Output voltage(Max.)[Vrms] 5.6
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 85
  • ・Provided with 2 lines of outputs to the built-in power amp and the pre-out
    ・Volume switching noise is reduced by installing the advanced 6ch independently-controlled
        electronic volume with soft switching.
    ・Different signals from the different sources can be outputted to the front and
        rear sections independently and this provides an option of rear-seat entertainment.
    ・Adopting the Bi-CMOS process achieves low current consumption,
        which contributes to energy-saving design.
    ・3-wire serial interface supported for both of 3.3V and 5V microcomputers
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New Products:
Technical Data
Thermal Resistance

The definition and how to use thermal resistance and thermal characterization parameter of packages for ROHM’s integrated circuit are described in this application note.