Help designing HP,BP,LP filter with LM100CCN

iONic

Member
I have the following two chips, LM10CCN and the LM100CCN for which I was going to make a circuit. The signal input will be from the headphone output of a portable MP3 player. One or the other of these chips, not sure which, was to separate the inpt sound into High, Mid, and Low frequencies, Hence I need to make the chips perform as a High-Pass, Band-Pass, and Low-Pass filters. The output of these three separate signals will controll three different color
LED's in a pair of goggles. I already have the circuit that makes the LED's flash based on signal intensity. I bought these chips thinking it would be easy to build the circuit, but was lost when reading the datasheets!

If anyone can aid me in designing this I would be most helpfull.



DATASHEETS CAN BE FOUND HERE:

https://www.electro-tech-online.com/custompdfs/2006/10/MF10.pdf

https://www.electro-tech-online.com/custompdfs/2006/10/LMF100.pdf

Aproximate ranges:

Bass - 20Hz - 200Hz
Midtone - 200Hz - 500Hz
Trebble - 500Hz - 20kHz
 
These are switched capacitor filters, they need a clock. I've used Linear Tech's switched cap filters, via filtercad they offer. These are older generation chips, so you'll have to drill through the formulae to get the proper resistor/capacitor values for your cutoffs (as well as the clock).
 
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