sudil99
Junior Member level 3
I have an amplifier is designed to amplify the signal so that output is max. 2.5 V because my ADC can read only upto 0 - 2.5 V. But my circuit uses +5 and -5 V supply.
So I need a voltage limiter which can cut out output beyond that range.
I used a resistor with zener diode of 2.7V and 3.3V, but zener diodes are not sharp at such ranges.
Voltage divider at output doesn't work because I need only positive output.
Currently I am using 4 diodes to limit voltage upto 2.8V and in parallel with 1 diode in opposite direction to limit voltage upto -0.7 V.
Is there any better solution?
(I cannot change my supply voltage because of other components)
Thanx
So I need a voltage limiter which can cut out output beyond that range.
I used a resistor with zener diode of 2.7V and 3.3V, but zener diodes are not sharp at such ranges.
Voltage divider at output doesn't work because I need only positive output.
Currently I am using 4 diodes to limit voltage upto 2.8V and in parallel with 1 diode in opposite direction to limit voltage upto -0.7 V.
Is there any better solution?
(I cannot change my supply voltage because of other components)
Thanx