M62445FP Datasheet, PDF (14/17 Pages) Mitsubishi Electric Semiconductor – DIGITAL SOUND CONTROLLER WITH DYNAMIC BASS BOOST

Dynamic bass boost (T-Bass) circuit
SW OP AMP
OUT2
T-Bass level
Output mute move together
BPF
C1 _C2
R1
R2
R3
Center frequency
f0 = 1 / 2 C1•C2•R1•R2 [Hz]
Q = (C1•C2•R2)/R1 / (C1+C2)
(Ex.)T-BAss band f=60Hz
R1=2.6KΩ , R2=120KΩ
C1=0.15µ , C2=0.15µ
ALC
circuit
Total wave
rectifier
MITSUBISHI
ELECTRIC
OUT1
14 / 17