PT2308P-C 데이터 시트보기 (PDF) - Princeton Technology
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PT2308P-C Datasheet PDF : 12 Pages
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2-Channel 300mW Class AB Power Amplifier
PT2308P
BASIC APPLICATION DESCRIPTION
PT2308P is a low power amplifier which operates with a 5V input voltage, it can be used to drive
regular earphones or low power speakers with a load resistance of 8ohm or higher. The operation
mechanics is much like the typical OPAMP. (The picture below shows the basic application circuit of
PT2308P as an inverted amplifier).
Ci
Vin
R1
VREF
R2
Co
Vout
Show in one side
R3
RL
PT2308P Typical Application Circuit
1. Gain Settings
The inverted amplifier’s amplification is equal to the ratio between R2 and R1 (Av= -(R2÷R1)).
Please take note that the maximum supply voltage for the PT2308P is 5V, voltage gain setting
should depend on the input level amplitude; too much voltage gain may increase the chance of
causing clipping at the output.
2. VREF
Because the PT2308P operates with a single power source, to ensure the best output performance,
the suggested value for VREF is 1/2 VDD.
PT2308P V1.0
-4-
November, 2005
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