IIR Filters - Theory and Implementation (STM32) - Phil’s Lab #32

Tutorial on IIR (Infinite Impulse Response) digital filters, including digital filtering overview, IIR filter theory, FIR vs IIR, Z-transform design/analysis, design using analogue prototypes, and finally an implementation on an embedded system (STM32). Free trial of Altium Designer: Visit for $2 for five 2-layer PCBs and $5 for five 4-layer PCBs. Patreon: Git: [TIMESTAMPS] 00:00 Introduction 00:19 JLCPCB and LittleBrain Files 00:54 Altium Designer Free Trial 01:26 Content 01:44 Digital Filter Basics 04:13 FIR vs IIR 05:41 IIR Filter Theory 10:15 IIR Filter Design Example 1 (Z-Transform) 13:54 IIR Filter Design Example 2 (Analogue Prototype) 15:41 Implementation (Header and Source Files) 17:47 Implementation (main.c) 18:48 Demonstration ID: QIBvbJtYjWuHiTG0uCoK