what chip should i use to have a lowpass filter

eeboy

Joined Sep 27, 2007
90
What does the output feed?

If you are feeding the input of an ADC (or another high impedance load) why not just use a RC filter configured as a low pass?
 

eeboy

Joined Sep 27, 2007
90
No need for a chip in this situation.

A 15.8k Ohm resistor in series with a 100pF cap shunted to ground will give you a cutoff frequency of 100kHz.
 

Ron H

Joined Apr 14, 2005
7,063
You dont need a chip all you need is a resistor and a capacitor.

This circuit will give ayou a cut off point of about 1K and a drop of about 3db per octave.
That has a 3dB cutoff frequency of 284Hz, and drops at 6dB per octave.:rolleyes:
Pinoyballer wants a 100kHz cutoff frequency, we think.
 
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