Configuring band-pass on National MF10 SCF chip

[RG]

Hi,
I'm trying to configure the National MF10 Switched Capacitor Filter(SCF) chip to be a bandpass filter.
The problem is that the datasheet has formulas on how to calculate the resistor values for setting up as a band-pass, but there is no example or diagrams to hook up the pins as a band-pass.

The datasheet only shows how to hook up the pins as a low-pass(on page 15).
I have done my calculations , I know what resistors values to use etc..
I only need a diagram to show me how to hook up the pins as a Mode 2, 4th Order band-pass.

the datasheet can be found here --> http://www.national.com/pf/MF/MF10.html

Can anyone familiar with the MF10 please help?

Drop me a pm if u do not wish to post your reply here, or u know something but not sure if it will work. I'm willing to try it out.

Thanks in advance.

 

[Ouabache]

I haven't used this IC but am willing to brain storm with you.
To make this more fun, can you tell me your desired specs?
I'd like to design along with you.

What is your desired center frequency - fo? what upper fH and
lower fL cutoff frequencies have you chosen (-3dB points)?
What clock frequency & resistor values have you chosen?

From the datasheet, it appears you will be cascading two
stages that are both on chip. Fig 9 (of spec sheet) shows the first stage.
We can deduce a lot of information from that diagram. To make a 4th order,
mode 2 BPF, we can use analogous reasoning as the wiring in diagrams Fig 16 and 17 (page 21) indicate. The difference between those two has to diagrams has to do with supply voltages, which may be applicable if your circuit is limited to TTL or CMOS logic levels.

I have already analyzed Fig 16 and 17 and can offer my thoughts.
Page 8 (pin descriptions) has a lot of useful information. I referred back to
it several times thinking about your filter.

 

[ravenprp]

Hello,

I understand your frustration with the lack of examples or diagrams for configuring the National MF10 SCF chip as a bandpass filter. Unfortunately, the datasheet does not provide specific instructions for this configuration. However, I suggest reaching out to National's technical support team for assistance. They may be able to provide you with the necessary diagrams or guide you through the process of setting up the chip as a bandpass filter.

Additionally, you can also try searching for application notes or tutorials online that may provide step-by-step instructions for configuring the chip as a bandpass filter. I also recommend checking forums or online communities where people have used the MF10 chip in similar applications, as they may have shared their experiences and solutions.

In the meantime, I suggest double-checking your calculations and resistor values to ensure they are accurate. It may also be helpful to consult with an experienced engineer or colleague for their insights and suggestions.

I hope you are able to successfully configure the MF10 chip as a bandpass filter. Best of luck!