Non-inverting low-pass 1st order

Transfer function: $H(j\omega )=A.\frac{1+j{\displaystyle \frac{\omega }{{\omega }_2}}}{1+j{\displaystyle \frac{\omega }{{\omega }_1}}}$

With: $A=1+\frac{R_2}{R_1}$

High-pass cut-off frequency: $f_1=\frac{1}{2\pi .R_{2}C}$

Low-pass cut-off frequency: $f_2=\frac{1}{2\pi .(R_1\parallel R_2)C}$

Gain when ω < ω₁: $|H(j\omega )|\stackrel{\omega <{\omega }_1}{\to }A$

Gain when ω > ω₂: $|H(j\omega )|\stackrel{\omega >{\omega }_2}{\to }A\frac{{\omega }_1}{{\omega }_2}=1$