Princeton Technology Corp.

Tel : 886-2-29162151

Fax : 886-2-29174598

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

Electronic Volume Controller IC

PT2254A

PT2254A v 2.4

Page 4

Revised August 1998

APPLICATION CIRCUIT 2

Dual Power Supply

(Only One Channel for Reference)

Vss

L-OU T1

L-IN 1

A-G N D

L-IN 2

L-OU T2

ST

GN D

Vcc

R-O U T 1

R-IN 1

A-G N D

R-IN 2

R-O U T 2

DATA

CK

P T 2254A

ST

OU T PUT

10

F

10

F

10

F

0.15 uF

A-G N D

IN PU T

CK

DATA

10

F

51 K

LM 3 5 8

3

2

VD D +6 V

Vss -6 V

1

11 0 K

68 p F

8

4

+

+

amplitude should not be more than 1 Vrms, (ii) The bandwidth of input should be within

the range of 20 to 22 K; otherwise too much distortion will be generated.