Markie
Junior Member level 2
I am designing the four channel led driver with charge pump, I need four channels are perfect matching with the goal current and the output resistor is low, so offset cancell amplifier is needed. But I don't know the auto zero and chopper amplifier which one is suit for my necessary. Due to my knowledge, the auto zero stabilized CMOS amplifiers have high write noise, whether it cause the bad EMC or EMI ( my power is charge pump circuits ) or high input current noise? If I use Chopper amplifier whether it will cause a much higher load of chip area than AZ?
Any help! thx!
Any help! thx!