BD3811K1 Rohm Semiconductor, BD3811K1 Datasheet - Page 11

• Manufacturer Part Number: BD3811K1
• Description: IC SOUND PROCESSOR 8CH 80QFP
• Manufacturer: Rohm Semiconductor
• Type: Sound Processorr

Specifications of BD3811K1

• Applications: Home Theater
• Mounting Type: Surface Mount
• Package / Case: 80-QFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

●Setting constants for tone control filters
BD3811K1,BD3818KS
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1. Treble filter
fc=1/2π(R2)C (Hz)
G=20log(R1+R2+Zc)/(R2+Zc) (dB)
Zc=1/jωC (Ω)
Standard values of R1, R2 (reference)
*The actual boost cut level may deviate from the standard values in some degree.
Treble Boost Amount
Cut Amount
10dB
12dB
14dB
2dB
4dB
6dB
8dB
0dB
10.3
12.3
14.0
15.4
16.5
4.1
7.3
R1
Resistance (KΩ)
0
*Typ.
15.9
12.7
9.7
7.7
6.0
4.6
3.5
R2
20
11/17
G
3dB
3dB
Fig.4
Fig.5
ｆc
Technical Note
2010.06 - Rev.A
G
G
ｆ