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  • LM4991: Work well at Ri=3.9kohms, Rf=6.2kohms, RL(Speaker)=32ohms and VDD=5V?

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    Part Number: LM4991 Other Parts Discussed in Thread: LM4818 Tool/software: Hello, My customer is considering to use one of LM4991MA/NOPB, LM4818MX/NOPB, LM4864M/NOPB, LM4862M/NOPB or LM4861M/NOPB. At the application circuits on the datasheet, they would…
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  • OPA1671: OPA1671 drive a speaker

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    Part Number: OPA1671 Other Parts Discussed in Thread: LME49721 , LM4818 Tool/software: Hi! I designed a circuit to drive a speaker(32Ω) using the OPA1671. The simulation result looks good, with a 150mV input signal and output about 1.8V. However, in…
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