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