The BD3813KS and BD3815KS sound processors integrate a gain amp and volume/bass/treble controls on a single chip,
making them optimally suited for use in audio applications, such as AV receivers, home theater systems and mini-component
systems. Used in combination with the BD3812F, a 2ch volume IC, the units enable 6.1ch and 7.1ch operation.
In addition, utilization of a BiCMOS process ensures a wide dynamic range (129dB).
2) Independent 6 channels for Master Volume (0 to -95 dB, MUTE 1dB/Step)
Implementation of a resistance ladder type circuit reduces residual noise and shock sounds during switching.
3) Low current consumption achieved through utilization of BiCMOS processes
4) Maximum output voltage: 4.2Vrms (Vcc=7V, VEE=-7V, RL=10kΩ)
5) Built-in 5ch independent input gain amplifier - useful for amplifying input signals
6) Built-in 2ch output port
7) 2-wire serial control (for both 3.3V and 5V)
●Applications
AV receivers, home theater systems and mini-component systems
*1 Applying voltage only to the VCC side, even if within the specified power supply voltage range, may cause excessive
current to flow, resulting in permanent damage to the IC. Therefore, when starting up the power supplies, VEE and V
should either be powered ON simultaneously, or VEE first, followed by V
*2 Please note the derating characteristics above Ta=25℃: 10mW/℃ (Mounted on a 70mmx70mmx1.6mm sized board).
3) Control Data Format - Basic Configuration
Input direction
MSB LSB
D16 D15 D14 D13 D12 D11D10D9D8D7D6D5D4 D3 D2D1D0
Data
・Control Data Formats
Input direction
D16 D15 D14 D13 D12 D11 D10D9D8D7D6D5D4 D3 D2D1D0
Data
Data
Data
Data
Input Gain
1
2
3
4
FR/FL
D16 D15 D14 D13 D12 D11 D10D9D8D7D6D5D4 D3 D2D1D0
D16 D15 D14 D13 D12 D11 D10D9D8D7D6D5D4 D3 D2D1D0
D16 D15 D14 D13 D12 D11 D10D9D8D7D6D5D4 D3 D2D1D0
Input Gain
SR/SL
Treble Bass
Master Volume FRch Master Volume FLch 0 0 1
Master Volume SRch Master Volume SLch 0 1 0
Data Select Address
Input GainC Input Gain
SW
Input Gain
SB
Port A
TON
E
0:L
1:H
SW1
0:A
1:B
Port B
0:L
1:H
Technical Note
Select Address
SW3
SW2
0:A
0:A
1:B
1:B
* * 1 0 0 0
0 0 0 0
D16 D15 D14 D13 D12 D11 D10D9D8D7D6D5D4 D3 D2D1D0
Data
5
Changing the Select Address settings allows selection of four different control formats.
For Select Address, values except those shown above must not be specified.
The address data must be initialized after every power ON.
* Indicates 0 or 1.
(Example)
Input direction
MSB LSB MSB LSB MSB LSB MSB LSB MSB LSB
Data1 L Data 2 L Data 3 LData 4 LData 5 L
“L” means latch.
After power ON, only the desired data can be set for the second and subsequent times,.