Power Amplifier Circuit Diagram Formed by CA3094 and Others

Published:2011/5/20 22:28:00 Author:leo | Keyword: Power Amplifier Circuit Diagram Formed by CA3094 and Others, CA3094 | From:SeekIC

As what is shown in the picture, this is a power amplifier circuit which is made up of CA3094 and others. CA3093 contains a output transistor with the maximum output current of 100mA and OTL audio amplifier used for 8Ω load with bootstrap transistor as well as tone control circuit and so on. In the circuit, VT2 and VT3 can form a complementary type emitting following bootstrap circuit. VT1 offers biasing and compensates temperature, which also decides the operating point of AB type amplifiers. C2 is bootstrap capacitor which is used to improve the drive voltage of amplifier. Tone control circuit is located in the load feedback circuit of operating amplifier to acquire better frequency feature.



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