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AN540 |
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| Part Number | AN540 |
| Manufacturer | Microchip (https://www.microchip.com/) Technology |
| Description | www.DataSheet4U.com Implementing IIR Digital Filters AN540 Implementing IIR Digital Filters INTRODUCTION This application note describes the implementation of various digital filters using the PIC17... |
| Features |
Impulse Response (IIR) filters is given. The following type of filters are implemented: • • • • Low Pass High Pass Band Pass Band Stop (notch) filter THEORY OF OPERATION Digital filters in most cases assume the following form of relationship between the output and input sequences. y(n) = - ∑ aiy(n - i) + ∑ bjx(n - j) i=o j=o M N The above equation basically states that the present output is a weighted sum of the past inputs and past outputs. In case of FIR filters, the weighted constants ai=0 and in case of IIR filters, at least one of the ai constant is non zero. In case of IIR, the above f... |
| Document |
 AN540 Data Sheet
PDF 123.03KB |
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