[SOLVED] How to generate mV level voltage on board?

[hyleeinhit]

Hi, I am designing a test board for a hysteresis comparator which need two reference voltages of which the difference is mV level (ex:10mV to 50mV). I found the test environment is too noisy and the noise is easily to achieve over 50mV. Is there anyone has an experience to generate mV level reference voltage. Any guideline to follow? Thanks!

 

[strabush]

make a voltage divider with three series resistors. the center resistor will be much smaller than the other two, so the voltage drop on this resistor is 5 to 10mV as you need. connect large electrolytic capacitors from the two reference voltages to ground to filter the noise.

 

[hyleeinhit]

make a voltage divider with three series resistors. the center resistor will be much smaller than the other two, so the voltage drop on this resistor is 5 to 10mV as you need. connect large electrolytic capacitors from the two reference voltages to ground to filter the noise.

Thank a lot! I will give a shot on that!