TDA2050 Просмотр технического описания (PDF) - STMicroelectronics
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TDA2050 Datasheet PDF : 13 Pages
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SINGLE SUPPLY APPLICATION SUGGESTIONS
The recommended values of the external compo-
nents are those shown on the application circuit
TDA2050
of fig. 3. Different values can be used. The follow-
ing table can help the designer.
Component
Recommended
Value
Purpose
R1, R2, R3
22kΩ
Biasing Resistor
R4
680Ω
Feedback Resistors
R5
22kΩ
R6
2.2Ω
Frequency Stability
C1
2.2µF
Input Decoupling DC
C2
100µF
Supply Voltage Rejection
C3
1000µF
Supply Voltage Bypass
C4
22µF
Inverting Input DC
Decoupling
C5
100nF
Supply Voltage Bypass
C6
0.47µF
Frequency Stability
C7
1000µF
Output DC Decoupling
(*) The gain must be higher than 24dB
Larger than
Recommended Value
Increase of Gain
Decrease of Gain (*)
Danger of Oscillations
Worse Turn-off Transient
Worse Turn-on Delay
Increase of Switching
ON/OFF
Smaller than
Recommended Value
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 8ohm (or more) a lower value of C2 can
be used (i.e. 22µF).
C7 can be larger than 1000uF only if the supply
voltage does not exceed 40V.
TYPICAL CHARACTERISTICS (Split Supply Test Circuit unless otherwise specified)
Figure 5: Output Power vs. Supply Voltage
Figure 6: Distortion vs. Output Power
7/13
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