LM4910 For two-channel amplifier typical circuit diagram

Published:2011/8/16 22:18:00 Author:Rebekka | Keyword: two-channel amplifier | From:SeekIC

Figure shows the LM4910 for dual-channel amplifier typical circuit. Left and right channel audio signals are inputed LM4910 (MSOP / SO packaging) 1,2 feet respectively. After being amplified by internal amplifier, then they will be outputed by the foot 8, 7, 6 respectively and added to each speaker channel directly. Amplifier gain Av =- Rf / Ri, the maximum poweris PDMAX = 4VDD2/π2RL. External input resistors and capacitors determine the input-3dB bandwidth, taking Ci ≥ 1 / (2π × 20kΩ × 20Hz) with approximately 0.39μF capacitor. LM4910's pin 3 isconnect shutdown control outside.It is allowed to work when the 3 feet connect VDD (high level); It is not allowed to work when the 3 pin connect ground (low).



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