Resonant HPF with AS3109

DIY STUFF
1

Hello everyone,

I’m trying to design a resonant HPF and I need some help. After trying some circuits with no success, I’ve decided to use a AS3109 chip that I have available.

I’ve been looking for examples online, but I can only find low pass filters. So, crossing a design for the AS3109 as LPF and a design for HPF using a similar chip (AS3320), I’ve come up with the following circuit (excuse me for the messy schematic, I’m still setting up my libraries).

GCM-011-1 Schematic v1
GCM-011-1 Schematic v12338×1652 129 KB

I’m not sure if it will work, so it would be great if you could tell me what you think. I don’t know if I’ll use the four stages or if maybe two are enough. Also, I’m aware that I might need to adjust the amplification/attenuation of the signals to make it work as intended. At the moment it’s just a sketch.

I haven’t been able to set up the circuit myself yet, since I’m missing some capacitors. I’ll buy some next week and give it a try. Meanwhile, any advise that you can give me will be truly helpful.

Thank you very much

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2

Hi, I’m afraid I can’t track your hi pass in your schematic. My advice? Build it out on a breadboard and then you can track and trace.
Go on, JFDI accreditation and glory awaits!

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