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LM4910 minimum output noise / reduce output power circuit di

2014-11-13 09:56  
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LM4910 minimum output noise / reduce output power circuit diagram
The figure shows the LM4910's minimum output noise / reduce the output power circuit. Measures to reduce the output noise are: it adds a resistor Rseries in series between the output and the load to reduce the output noise and achieve the purpose of reducing noise. The two ends of feedback resistance Rf are connected ahigh frequency bypass capacitor Cf in parallelis for keeping down high-frequency noise. J1 is a shorted jumper. The amplifier is in shutdown mode and power consumption is minimum when J1 short jumper is earthing. When J1 short jumper is off(VDD high level), the amplifier is in working mode and the power dissipation is PDMAX=4VDD2/π2RL.