7.1ch Sound Processor for High-Quality Audio with Built-in Micro-step Volume - BD34704KS2 (New)

The BD34704KS2 is an 8ch independent volume system realized high-quality sound by improved specification of op-amp and optimized layout of the element.The system is designed to allow 7.1ch surround system application. Micro-step volume can reduce the switching pop noise during volume attenuation, so a high quality audio system could be achieved. This IC is available 12ch single-end input selectors to maximum 3 zones. And also available 2 system multi input selector.

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part Number
Unit Quantity
Minimum Package Quantity
Packing Type
Constitution Materials List
BD34704KS2 Active SQFP-T80C 500 500 Tray inquiry Yes
Vcc(Min.)[V] 6.5
Vcc(Max.)[V] 7.5
Iq[mA] 32.0
I/F 2-wire
THD[%] 4.0E-4
Output Noise[µVrms] 1
Output voltage(Max.)[Vrms] 4.2
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 85
    • 12ch input selectors (It is extendable to up to 18 in case of no use other functions such as Multi input, REC output and SUB output)
    • Micro-step volume can reduce the switching pop noise during volume attenuation
    • Zone 3 is supported
    • 2ch sub-volume for zone output that is available for independent control with a micro step function
    • 2-wire serial bus control, corresponding to 3.3/5V
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Technical Data
Application Note

Thermal Resistance