sakthivel.eee
Junior Member level 3
Reg:Input Filter for ADC
Dear All,
How to decide R and c values of input filter to ADC. I know that it is depends on the cutoff frequency which is maximum frequency of input signal. But what is maximum value of resistance and capacitance should be used at the input of ADC. Is there any other factors which decides these values like input impedence of ADC, Internal Capacitor of ADC etc.,?
I have used Op-amp for signal condtioning, Before opamp i have low pass filter. Is it necessary to use one more filter or capacitor after op-amp?
Thanks in advance,
Thanks & Regards,
Sakthivel.S
Dear All,
How to decide R and c values of input filter to ADC. I know that it is depends on the cutoff frequency which is maximum frequency of input signal. But what is maximum value of resistance and capacitance should be used at the input of ADC. Is there any other factors which decides these values like input impedence of ADC, Internal Capacitor of ADC etc.,?
I have used Op-amp for signal condtioning, Before opamp i have low pass filter. Is it necessary to use one more filter or capacitor after op-amp?
Thanks in advance,
Thanks & Regards,
Sakthivel.S