M61533FP 데이터 시트보기 (PDF) - Renesas Electronics

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M61533FP

4ch Electronic Volume with AGC

Renesas Electronics 

M61533FP

LPF

Equivalent circuit of LPF

C1

Vin

+K

Vout

R1

R2

C2

F(s) =

Vout

Vin

=

1

R1R2C1C2

K

S 2+

1

R1 C1

+

1

R2 C1

+(

1-K

)

1

R2 C2

S

+

1

R1R2C1C2

ω0 =

1

R1R2C1C2

Q=

1

R2C2

R1 C1

+

R1C2

R2 C1

+ ( 1-K )

R1C1

R2 C2

Frequency characteristics (SWch LPF)

R1=2.2kΩ, R2=4.7kΩ, C1=0.22µF, C2= 0.1µF, K=1

Q .=. 0.68, fc .=. 300Hz

*This frequency response is a simulation result.

Rev.1.0, Sep.19.2003, page 9 of 12

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