Sound Processors with Built-in 2-Band Equalizer - BD3873FS

ROHM's sound processors deliver high-fidelity audio, are easy to use, integrate a two-band equalizer, and are compatible with power supply voltages between 4.5V and 9.5V due to low current consumption operation, making them ideally suited for use in portable stereo systems.

Please contact us for purchase because there is no distribution Inventory.--- inquiry
* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part Number
Unit Quantity
Minimum Package Quantity
Packing Type
BD3873FS-E2 Active SSOP-A24 2000 2000 Taping Yes
Vcc(Min.)[V] 4.5
Vcc(Max.)[V] 9.5
Iq[mA] 8.0
I/F 2-wire
Volume Range 0to-87 / -∞ (1dB / step)
Tone Control Band BASS, Treble
Input Gain[dB] 18 / 21 / 24 / 27
Surround Yes
THD[%] 0.01
Output Noise[µVrms] 40(Gv=24dB)
Output voltage(Max.)[Vrms] 2.1
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 85
  • ・Using extemal components,center frequencies and Q factors of the bass characteristics are
    ・Providing a mute switch onto one of the input pins allows cross-talk suppression.
    ・A surround function can be constructed without external components.
    ・Enargy-saving design resulting in low current consumption,by utillizing the BiCMOS
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Technical Data
Application Note

Thermal Resistance