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MAX3222: Capacitor Tolerance Question

Ishaan Sandhu
Prodigy 200 points
Part Number: MAX3222

For the charge pump caps for V+/V- and C+/C-, is a tolerance of +/- 10% OK?  If not, what is our recommended tolerance?

Best, Ishaan

  • 0
    TI__Guru 62920 points
    Hi Ishaan,

    10% tolerance would be fine. These capacitors are used by the charge pump to generate the higher voltage references required for RS-232 communication. This operation is not very sensitive to the exact component values. Having slightly different capacitances would just result in slightly different voltage ripple or switching frequency.

    Regards,
    Max