Other Parts Discussed in Thread: CC1310,
Hi All,
Hi All,
I would have a technical question for TPS22860 in a board in which I should also use CC1310 as a microcontroller.
This device is battery powered so consumption is crucial.
The sch. provides an analog section which is activated, on command of the micro, only when necessary to acquire from the analog section in order to optimize consumption.
To manage activation of the analog part I think to use TPS22860 (Ultra Low leakage Load Switch).
Reading the datasheet it is clearly written that the "control input" "ON" signal must not be left floating.
I was wondering if I could directly manage this signal with the micro output or it is still necessary to provide an external pull-down resistance to manage the transients in which the micro is starting (for example during the poweron phase or during the reset) and therefore the inputs are in tri-state. This would be a problem because it would mean that this pull-down would cause me to consume power whenever I have to keep the "load switch" active.
Example: suppose I have to insert a 470KOhm pull down ... since "high output" is 3.3V -> I would have a consumption of about 9uA ... which for circuits of this type is a huge waste of energy.
Could you let me know what do you suggest in these cases?
Thank you very much,
Antonio
