ISO122 124 filter circuit diagram

Posted on Mar 28, 2007

As shown by ISO122/124 -type filter circuit shown in FIG. ISO122/124 modem internal oscillator frequency is set to 500kHz, in order to suppress from the DC/DC converter is any

ISO122 124 filter circuit diagram
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straight (beat frequency) noise power at the end of each use filter inductor and capacitors for filtering. After filtering ISO122/124 output of 500kHz ripple is suppressed to 20mV, then cheap OPA602 (or OPA237) constitute two-pole low-pass filter further filtering, two-pole low-pass filter cut-off point of 100kHz.

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