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
ATTENUATOR
Attenuator 1 attenuates 0 ~ -60dB at 10dB/step.
Attenuator 2 attenuates 0 ~ -8dB at 2dB/step.
BUFFER AMP
Tel: 886-2-66296288
Fax: 886-2-29174598
URL: http://www.princeton.com.tw
PT2253A
IN 1
RATT-1
0dB
OUT1
IN 2
-10
-20
RATT-2
-30
-40
-50
-60
ATTENUATOR 1
0
OUT2
-2
-4
-6
-8
∞
ATTENUATOR 2
A-GND
RATT-1=50KΩ(TYP.)
RATT-2=20KΩ(TYP.)
If there is the possibility of excessive voltage in the attenuator, it is recommended that a protective
diode be inserted. Please refer to the diagram below.
Vcc
Vcc
IN
Vss
Vss
PT2253A V2.8
-7-
December, 2005
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