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  1. M

    can we use battery as power supply to reduce noise?

    Normally, how much noise can the battery induce? Is it lower than signal generator power supply? Many thanks
  2. M

    Need help on Voltage output

    I am not very clear of your case, a picture is better. However, you can try to connect a buffer on the output node. good luck
  3. M

    why use a ptat or bandgap bias

    I have the same question, can anyone answer it? In specially, if a opamp's bias current is 300uA, can we directly use a current generator to connect it while testing? thanks advance
  4. M

    lock in amplifier IC design

    I plan to design a lock in amplifier IC to sense weak signal from noise, can anyone give me some advice or share some experience? I have no idea now. Many thanks Yong

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