KA9270 查看數據表（PDF） - Samsung

零件编号

产品描述 (功能)

生产厂家

KA9270

AUDIO FILTER

Samsung 

KA9270

AUDIO FILTER

APPLICATION CIRCUIT

3.3§Þ

CH2

OUTPUT

RL

1/2 Vcc

10K

R12

C9

1M

5.6K

Vcc

120uP

12K R9

CH2-INPUT

1500p

(from DAC

C10

4.7¥ì+

C8

C7

27K

27K

OUTPUT)

5.6K

330p

R11

10¥ì

5.6K

R8

R10

R7

+

4.7¥ì

C8

20

19

18

17

16

15

14

13

12

11

Vcc

LPF2

-

-

+

+

DE-AMP2

-

+

-

+

BUFFER2

+

-

LPF1

MUTE

SW

DE-EM

SW

+

-

DE-AMP1

BUFFER1

+

-

1

CH1

OUTPUT

(Vo)

2

3

4

5

6

7

8

9

10

C4

+ 330p

C5

3.3¥ì

RL

10K

5.6K

R1 1500p

10u

R3 5.6K

R2

C2

MUTE

DE-EMPHASIS

C3

CONTROL CONTROL

SIGNAL SIGNAL

1200p

(MUTE)

(DE-EM)

R4 27K

12K

R6

27K

+

C7

4.7¥ì

CH1-INPUT

(from DAC

OUTPUT)

1M

Fig. 7

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