Hi Guys
I need to power up an opamp with dual supply in the range of +/-1.8V. The application is for a hand-held system and hence this is a battery-powered system. I am contemplating using two LDO's ie. Positive and negative LDO's for generating +1.8V and -1.8V respectively. But the problem is the two LDO inputs requires voltage of opposite polatiry. Hence it seems like i need to use two separate set of battery cells to meet this.
I have represented it as a block and attached it. Please let me know whether this implementation would work good and also whether there are any other alternates to overcome this separate batteries requirement
PS: I tried using +ve to -Ve voltage converter but this generates unwanted noise, which surprisingly, could not be eliminated by power line filtering. So i am avoiding switching converters.
I need to power up an opamp with dual supply in the range of +/-1.8V. The application is for a hand-held system and hence this is a battery-powered system. I am contemplating using two LDO's ie. Positive and negative LDO's for generating +1.8V and -1.8V respectively. But the problem is the two LDO inputs requires voltage of opposite polatiry. Hence it seems like i need to use two separate set of battery cells to meet this.
I have represented it as a block and attached it. Please let me know whether this implementation would work good and also whether there are any other alternates to overcome this separate batteries requirement
PS: I tried using +ve to -Ve voltage converter but this generates unwanted noise, which surprisingly, could not be eliminated by power line filtering. So i am avoiding switching converters.
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