TDA2050 查看數據表（PDF） - Unisonic Technologies
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TDA2050 Datasheet PDF : 7 Pages
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TDA2050
TYPICAL APPLICATION CIRCUIT(CONT.)
FOR SINGLE SUPPLY APPLICATION SUGGESTIONS
LINEAR INTEGRATED CIRCUIT
+VS
R1
22kΩ
C3
C1 1000μF
C5
100nF
2.2μF
1
5
C7
IN
+
1000μF
UTC
4
R3
22kΩ
2 TDA2050
-
R6
3
R5
2.2Ω
RL
22kΩ
C6
C4
0.47μF
22μF
C2
1000μF
R2
22kΩ
R4
680Ω
Figure.2 Single Supply Typical Application Circuit
The following table demonstrates the recommended values of the external components are those shown
on above circuit. Different values can be used.
COMPONENT
PURPOSE
TYPICAL
RECOMMENDED VALUE
LARGER
SMALLER
R1, R2, R3
R4
R5
R6
C1
C2
Biasing Resistor
Feedback Resistor
Frequency Stability
Input Decoupling DC
Supply Voltage
Rejection
C3
Supply Voltage Bypass
C4
Inverting Input DC
Decoupling
C5
Supply Voltage Bypass
C6
Frequency Stability
C7
Output DC Decoupling
* The gain must be higher than 24dB
22kΩ
22kΩ
680Ω
2.2Ω
2.2µF
100µF
1000µF
22µF
100nF
0.47µF
1000µF
Increase of Gain
Decrease of Gain*
Danger of Oscillations
Worse Turn-off Transient
Worse Turn-on Delay
Increase of Switch ON/OFF
Decrease of Gain*
Increase of Gain
Higher Low-frequency cut-off
Danger of Oscillations
Worse of Turn-off Transient
Higher Low-frequency cut-off
Danger of Oscillations
Danger of Oscillations
Higher Low-frequency cut-off
NOTE: If the supply voltage is lower than 40V and the load is 8Ω(or more), a lower value of C2(i.e. 22µF) can be
used. C7 can be larger than 1000µF only if the supply voltage does not exceed 40V.
UNISONIC TECHNOLOGIES CO., LTD
www.unisonic.com.tw
5
QW-R107-036,A
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