PT2253A 查看數據表（PDF） - Princeton Technology
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PT2253A Datasheet PDF : 20 Pages
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Electronic Volume Controller IC
PIN CONFIGURATION
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
PT2253A
Vss
L-OUT1
L-IN1
A-GND
L-IN2
LOUT2
/INH
DCO
PIN DESCRIPTION
1
16
2
15
3
14
4
13
5
12
6
11
7
10
8
9
PT2253A
Vcc
R-OUT1
R-IN1
A-GND
R-IN2
R-OUT2
U/D
OSC
Pin Name I/O
Description
Pin No.
Vss Power Negative Power Supply
1
L-OUT1
O
10dB/Step Attenuator Output
A signal applied to ‘IN’ is attenuated into 7 steps from 0dB to -60dB.
2
L-IN1
I 10dB/Step Attenuator Input
3
A-GND GND Analog Ground Pin
4
L-IN2
I 2dB/Step Attenuator Input
5
L-OUT2
O
2dB/Step Attenuator Output
A signal applied to “IN” is attenuated into 5 steps from 0dB to -8dB.
6
Inhibit Terminal.
/INH
I At “L” level, all inputs and outputs are disabled.
7
At “H” level, operation is normal.
DCO
O DC Current Output Pin
8
OSC I/O RC Connecting Pin for the Oscillator
9
U/D
I Attenuator Up/Down Control Pin
10
R-OUT2 O 2dB/Step Attenuator Output, same as L-OUT2.
11
R-IN2
I 2dB/Step Attenuator Input, same as L-IN2.
12
A-GND GND Analog Ground Pin
13
R-IN1
I 10dB/Step Attenuator Input, same as L-IN1.
14
R-OUT1 O 10dB/Step Attenuator Output, same as L-OUT1.
15
Vcc Power Positive Power Supply
16
PT2253A V2.8
-3-
December, 2005
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