i want to give 5v as input to my pic 18f4520. but im getting 19mv from my pulse oximeter sensor....so it gives problem while interfacing pic and sensor.for that i need amplifier...pl tel meWhat is the 5V for?
There are no devices that can convert 19mV to 5V to provide a power supply, even at low currents, even if it could be done, the current consumption at 19mV could be more than 50 Amps for some PICs!
Is it for driving the ADC so you can measure the voltage? If it is, please tell us where the 19mV is coming from because the answer depends on other factors.
dear... can you please post a schematic??? so we can help you...
do you want ADC for pulse oximeter sensor ???
why you only need 5v from pulse oximeter sensor?