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Forum Post: AFE4404: Overlapping LED on time

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Part Number: AFE4404 I have a special test mode that is need. It requires that all three LEDs be on at the same time for most all of the Repetition Interval. The "normal" operational settings are for 100Hz at 1% duty cycle, with typical sequential sampling and conversion. For purposes of the test routine I would like to just change the 3 led on intervals to be the same. Normal values: LED1 802, 1201 LED2 0, 399 LED3 401, 800 PDN 5475, 39199 Proposed for test mode: LED1 0, 38950 LE21 0, 38950 LE31 0, 38950 PDN 39000, 39199 Is this a "valid" timing from a hardware functional point of view. (If the led drive current source is multiplexed between the different LEDs then of course this would not work...) Thoughts/ comments?

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