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MAX3243: MAX3243CDBG4 C1+- and C2+- pin connection

Robert Fu
Prodigy 150 points
Part Number: MAX3243

The Receiver MAX3243CDBG4 has C1+- and C2+-,

These pin have to connect 1uF cap.

What are the function of these pin, and why need cap?

  • 0
    TI__Mastermind 48215 points

    Robert,

    This device uses a charge pump to increase, invert, and regulate the voltages at V+ and V- which supply voltage to the outputs. This method requires four capacitors which are external to the device.

    C1 acts as a "flying" cap that charges the storage cap at V+ to 5v. C2 is used to invert this voltage and stores it on the cap at V-.


    Let me know if you have any more questions.

    Regards,
    Eric