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14.4V ground reference for ADC

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Arjunan M R:
Can I use 6.3V tantalum capacitor to bypass 5V supply?

Simon:
Just google tantalum capacitors, there will be lots of information. I don't know as i don't use them.

Arjunan M R:


This is what it says on "Voltage Derating Rules for Solid Tantalum and Niobium Capacitors" by AVX.

Simon:
You can probably run closer to maximum with a stable voltage, if you are smoothing a fluctuating voltage you may want more headroom for surges/spikes.

Arjunan M R:
Hi, the LDO i am using (LT3080) needs a minimum output curent of 1mA.I was going to use lm334z as a constant current source.But it is only available in higher quantities.
Can i  use a electronic potentiometer as a constant current source?
Or is there any simple circuits i can use as constant current source?

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