bandpass filter

[lerameur]

Hello,

I have been on the lookout for a high pass or bandpass filter chip. I
know there are a lot of low pass filter. but I need send a 5kH
communication link, so I would need a bandpass filter with a Fo at
5khz. There are chips like the max274 that can do it, but the steps
into designing it seems complex.
I am looking either a tutorial on how to set it up or actually a
bandpass filter chip from some other companies like linear ... with
simpler explanation.

ken

 

[George Herold]

On Oct 25, 8:08 pm, lerameur <leram...@yahoo.com> wrote:

Hello,

I have been on the lookout for a high pass or bandpass filter chip. I
know there are a lot of low pass filter. but I need send a  5kH
communication link, so I would need a bandpass filter with a Fo at
5khz. There are chips like the max274 that can do it, but the steps
into designing it seems complex.
I am looking either a tutorial on how to set it up or actually a
bandpass filter chip from some other companies like linear ... with
simpler explanation.

ken

What kind of Q? how many poles? There are a bunch of opamp circuits
that you could try. Googling bandpass +opamp gets lots of pages
(182,000)

George H.

 

[John Fields]

On Tue, 25 Oct 2011 17:08:07 -0700 (PDT), lerameur
<lerameur@yahoo.com> wrote:

Hello,

I have been on the lookout for a high pass or bandpass filter chip. I
know there are a lot of low pass filter. but I need send a 5kH
communication link, so I would need a bandpass filter with a Fo at
5khz. There are chips like the max274 that can do it, but the steps
into designing it seems complex.
I am looking either a tutorial on how to set it up or actually a
bandpass filter chip from some other companies like linear ... with
simpler explanation.

ken

---
http://www.linear.com/designtools/software/#Filter

--
JF

 

[o pere o]

On 10/26/2011 02:08 AM, lerameur wrote:

Hello,

I have been on the lookout for a high pass or bandpass filter chip. I
know there are a lot of low pass filter. but I need send a 5kH
communication link, so I would need a bandpass filter with a Fo at
5khz. There are chips like the max274 that can do it, but the steps
into designing it seems complex.
I am looking either a tutorial on how to set it up or actually a
bandpass filter chip from some other companies like linear ... with
simpler explanation.

ken

First of all you should guess the type of filter and order that suits
your needs.
OTOH, any OpAmp should work at 5 KHz. You may try this app for circuit
values:
http://www.wa4dsy.net/robot/bandpass-filter-calc

Pere