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OPA349* NANO POWER AMP.

Guru 13485 points
Other Parts Discussed in Thread: TLV3691, TLV3491, OPA349

I need to know how the following devices OPA349 (nanowatt opamp), TLV3491/TLV3691(nanowatt comparators) behave when their DC power raises very slowly, 45 seconds or more from 0 to 3V...

I intend to use them in an application which operating from small solar panel which charge large capacitor by very small current.

All inputs are current limited to less than 100uA by serial resistors, so no latchup condition would appear on their inputs.

However, I wander how they will behave in very slow power up condition. Would they draw more current until supply reaches its minimum value? Would they just be non-operative until valid supply value been achieved? Is there risk of any internal latch-up conditions which would prevent them from operating?