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leonken said:input voltage:1.2V, do not use some big resistor divider,
how to generate a 0.82v,0.75v output?
Thank you!
atmaca said:search for linear scaler realized by cmos'
mikem said:leonken said:input voltage:1.2V, do not use some big resistor divider,
how to generate a 0.82v,0.75v output?
Thank you!
What's wrong with resistor divider and buffer ?? If you are trully after a circuit that divides one voltage into another voltage, then you will need to look at using a analogue voltage multiplier IC in division configuration. good luck
leonken said:mikem said:leonken said:input voltage:1.2V, do not use some big resistor divider,
how to generate a 0.82v,0.75v output?
Thank you!
What's wrong with resistor divider and buffer ?? If you are trully after a circuit that divides one voltage into another voltage, then you will need to look at using a analogue voltage multiplier IC in division configuration. good luck
Consider the low power operation, resistor divider network is not a good choice.
so, I want to find some good approaches.
The nA current is acceptable for me,because I am designning a very low power IC.And I want to integrate this subcircuit on one chip.mikem said:leonken said:mikem said:leonken said:input voltage:1.2V, do not use some big resistor divider,
how to generate a 0.82v,0.75v output?
Thank you!
What's wrong with resistor divider and buffer ?? If you are trully after a circuit that divides one voltage into another voltage, then you will need to look at using a analogue voltage multiplier IC in division configuration. good luck
Consider the low power operation, resistor divider network is not a good choice.
so, I want to find some good approaches.
You need to be more specific ! Are we talking nA of current drain ? A couple of tens of µA drain would not be difficult and impractical to achieve with R-divider. If you're truly requiring nA current drain, then I would still consider R-divider (because of simplicity) and concentrate on PCB layout issues with minimizing leakage currents around high-Omic resistances and/or possible conformal coating of PCB to reduce moisture and hence leakage currents ... however this gets way too messy ... Basically I'm asking how long is a piece of string ? µA, nA or pA ?
leonken said:The nA current is acceptable for me,because I am designning a very low power IC.And I want to integrate this subcircuit on one chip.mikem said:leonken said:mikem said:leonken said:input voltage:1.2V, do not use some big resistor divider,
how to generate a 0.82v,0.75v output?
Thank you!
What's wrong with resistor divider and buffer ?? If you are trully after a circuit that divides one voltage into another voltage, then you will need to look at using a analogue voltage multiplier IC in division configuration. good luck
Consider the low power operation, resistor divider network is not a good choice.
so, I want to find some good approaches.
You need to be more specific ! Are we talking nA of current drain ? A couple of tens of µA drain would not be difficult and impractical to achieve with R-divider. If you're truly requiring nA current drain, then I would still consider R-divider (because of simplicity) and concentrate on PCB layout issues with minimizing leakage currents around high-Omic resistances and/or possible conformal coating of PCB to reduce moisture and hence leakage currents ... however this gets way too messy ... Basically I'm asking how long is a piece of string ? µA, nA or pA ?
The power supply voltage is 3V. If R-divider is selected, you can see,1uA current needs 3megohm, 1nA needs 3000megohm. so ,how to realize it in one chip?
So, I need a special approach.
You can use a LDO to realize themleonken said:input voltage:1.2V, do not use some big resistor divider,
how to generate a 0.82v,0.75v output?
Thank you!