Princeton Technology Corp PT2254A, PT2254AS Datasheet
Tel : 886-2-29162151
Fax : 886-2-29174598
http://www.princeton.com.tw
Princeton Technology Corp.
URL:
Electronic Volume Controller IC PT2254A
DESCRIPTION
PT2254A is an electronic volume controller IC utilizing CMOS Technology specially
designed for use on audio equipment. It has two built-in channels making it highly
suitable for mono and stereo sound applications. Through the specially designated
signals that are applied externally to the data, clock and strobe input pins, PT2254A can
control attenuation and channel balance.
FEATURES
!
CMOS Technology
!
Low Power Consumption
!
High Operating Voltage Range : Vcc = 4 ~ 12 V
!
0dB to -68dB attenuation controlled by 2dB/step
!
2 Channels in each chip
!
Single Power Supply or Dual Power Supplies of (+) and (-) can be used
!
Attenuation can be controlled by signals attached to the Strobe, Data and Clock Pins.
!
Available in 16 Pins, DIP & SO Package
APPLICATIONS
!
Audio Equipment Volume Control
!
Multi-Media PC Audio Control
PT2254A v 2.4 Page 1 Revised August 1998
Tel : 886-2-29162151
Fax : 886-2-29174598
http://www.princeton.com.tw
Princeton Technology Corp.
URL:
Electronic Volume Controller IC PT2254A
PIN CONFIGURATION
PT2254A v 2.4 Page 2 Revised August 1998
Tel : 886-2-29162151
Fax : 886-2-29174598
http://www.princeton.com.tw
Princeton Technology Corp.
URL:
Electronic Volume Controller IC PT2254A
APPLICATION CIRCUIT 1
Dual Power Supply
(Only One Channel for Reference)
Vss -6V
10 F
4
3
LM358
2
1
8
VDD +6V
INP UT
A-GND
OUTPUT
ST
CK
DATA
10 F
10 F
10 F
Vss
L-OUT1
+
+
L-IN1
A-GND
L-IN2
L-OUT2
ST
GND
Vcc
R-OUT1
R-IN1
A-GND
R-IN2
R-OUT2
DATA
CK
PT 2254A
PT2254A v 2.4 Page 3 Revised August 1998
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