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Is there an IC that will enable us to have biquad filter given in this PDF?

Thanx..:)

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A biquad filter uses three op-amps like this: -

enter image description here

So get a quad op-amp like this: -

enter image description here

And wire it up.

Alternatively go to Maxim or Linear technology and get a highly integrated switched capacitor filter like this: -

enter image description here

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  • \$\begingroup\$ Thanx....and design equation for the second circuit? \$\endgroup\$ – Aditya Apr 3 '15 at 16:58
  • \$\begingroup\$ Read the data sheet and you'll see that switched cap filters like this are configurable and hence no simple answer to your request. \$\endgroup\$ – Andy aka Apr 3 '15 at 17:02
  • \$\begingroup\$ Datasheet talks about variable state bandpass filter not biquad filter \$\endgroup\$ – Aditya Apr 6 '15 at 9:31
  • \$\begingroup\$ I was just using that particular switched-cap filter as an example of what can be found that is very integrated and high-order. Were you expecting some definitive list of devices that correspond to being a biquad filter? \$\endgroup\$ – Andy aka Apr 7 '15 at 8:02
  • \$\begingroup\$ But i am having a problem in the implementation of this circuit, because we have to make leaky integrator at once place but we cannot make a leaky integrator with this IC \$\endgroup\$ – Aditya Apr 8 '15 at 17:58

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