PT2310 Ver la hoja de datos (PDF) - Princeton Technology

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PT2310

Volume Controller IC

Princeton Technology 

Tel: 886-2-66296288

Fax: 886-2-29174598

URL: http://www.princeton.com.tw

Volume Controller IC

PT2310

FUNCTION DESCRIPTION

ATTENUATION

The PT2310 volume attenuator is consists of resistor ladder and analog switch. The Tap for loudness

function is connected to the Step 10 (-20 dB). The relations of step and attenuation is given in table

below

Step

dB

Step

dB

0

0

21

-42

1

-2

22

-44

2

-4

23

-46

3

-6

24

-48

4

-8

25

-50

5

-10

26

-52

6

-12

27

-54

7

-14

28

-56

8

-16

29

-58

9

-18

30

-60

10

-20

31

-62

11

-22

32

-64

12

-24

33

-66

13

-26

34

-68

14

-28

35

-70

15

-30

36

-72

16

-32

37

-74

17

-34

38

-76

18

-36

39

-78

19

-38

40

-∞

20

-40

Note:

1. Loudness On: LS1=On, LS2=Off

2. Loudness Off: LS1=Off, LS2=On

Ladder resistors Diagram

OUT

IN

S0

S1

2 8 .5 KΩ

LS1

S9

LD1

S10

S11

LD2

3.7K Ω

S12

2 1 .9 7 KΩ

LS2

S39

AGND

S40

PT2310 V1.0

-4-

June, 2005

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