. 2023 Dec 20;24(1):32. doi: 10.3390/s24010032

Table 1.

Obtaining variant filtering functions of the proposed versatile mixed-mode filter.

Operation Mode	Filtering Function		Input	Output
VM	LP	Non-inverting	$V_{1}$	$V_{o 1}$
		Inverting	$V_{2}$	$V_{o 1}$
		Non-inverting	$V_{1}$	$V_{o 2}$
		Inverting	$V_{2}$	$V_{o 2}$
		Non-inverting	$V_{1} {= V}_{6}$	$V_{o 3}$
		Inverting	$V_{2} {= V}_{5}$	$V_{o 3}$
		Differential	$V_{1} {- V}_{2}$	$V_{o 2}$
	BP	Non-inverting	$V_{3}$	$V_{o 1}$
		Inverting	$V_{4}$	$V_{o 1}$
		Non-inverting	$V_{3}$	$V_{o 2}$
		Inverting	$V_{4}$	$V_{o 2}$
		Non-inverting	$V_{5}$	$V_{o 3}$
		Inverting	$V_{6}$	$V_{o 3}$
		Differential	$V_{3} {- V}_{4}$	$V_{o 2}$
	HP	Non-inverting	$V_{5}$	$V_{o 1}$
		Inverting	$V_{6}$	$V_{o 1}$
		Non-inverting	$V_{5}$	$V_{o 2}$
		Inverting	$V_{6}$	$V_{o 2}$
		Non-inverting	$V_{3} {= V}_{6}$	$V_{o 3}$
		Inverting	$V_{4} {= V}_{5}$	$V_{o 3}$
		Differential	$V_{5} {- V}_{6}$	$V_{o 2}$
	BS	Non-inverting	$V_{1} {= V}_{5}$	$V_{o 1}$
		Inverting	$V_{2} {= V}_{6}$	$V_{o 1}$
		Non-inverting	$V_{1} {= V}_{5}$	$V_{o 2}$
		Inverting	$V_{2} {= V}_{6}$	$V_{o 2}$
		Differential	$(V_{1} {= V}_{5}) - (V_{2} {= V}_{6})$	$V_{o 2}$
	AP	Non-inverting	$V_{1} {= V}_{4} = V_{5}$	$V_{o 1}$
		Inverting	$V_{2} {= V}_{3} = V_{6}$	$V_{o 1}$
		Non-inverting	$V_{1} {= V}_{4} = V_{5}$	$V_{o 2}$
		Inverting	$V_{2} {= V}_{3} = V_{6}$	$V_{o 2}$
		Differential	$(V_{1} {= V}_{4} = V_{5}) - (V_{2} {= V}_{3} = V_{6})$	$V_{o 2}$
CM	LP	Non-inverting	$I_{1}$	$I_{o 1}$
	LP	Inverting	$I_{1}$	$I_{o 2}$
	BP	Non-inverting	$I_{2}$	$I_{o 2}$
	BP	Inverting	$I_{2}$	$I_{o 1}$
	HP	Non-inverting	$I_{3}$	$I_{o 1}$
	HP	Inverting	$I_{3}$	$I_{o 2}$
	BS	Non-inverting	$I_{1} = I_{3}$	$I_{o 1}$
	BS	Inverting	$I_{1} = I_{3}$	$I_{o 2}$
	AP	Non-inverting	$I_{1} = I_{2} = I_{3}$	$I_{o 1}$
	AP	Inverting	$I_{1} = I_{2} = I_{3}$	$I_{o 2}$
TAM	LP	Non-inverting	$V_{1}$	$I_{o 1}$
		Inverting	$V_{2}$	$I_{o 1}$
		Differential	$V_{1} {- V}_{2}$	$I_{o 1}$
	BP	Non-inverting	$V_{3}$	$I_{o 1}$
		Inverting	$V_{4}$	$I_{o 1}$
		Differential	$V_{3} {- V}_{4}$	$I_{o 1}$
	HP	Non-inverting	$V_{5}$	$I_{o 1}$
		Inverting	$V_{6}$	$I_{o 1}$
		Differential	$V_{5} {- V}_{6}$	$I_{o 1}$
	BS	Non-inverting	$V_{1} {= V}_{5}$	$I_{o 1}$
		Inverting	$V_{2} {= V}_{6}$	$I_{o 1}$
		Differential	$(V_{1} {= V}_{5}) - (V_{2} {= V}_{6})$	$I_{o 1}$
	AP	Non-inverting	$V_{1} {= V}_{4} = V_{5}$	$I_{o 1}$
		Inverting	$V_{2} {= V}_{3} = V_{6}$	$I_{o 1}$
		Differential	$(V_{1} {= V}_{4} = V_{5}) - (V_{2} {= V}_{3} = V_{6})$	$I_{o 1}$
TIM	LP	Non-inverting	$I_{1}$	$V_{o 1}$
	BP	Inverting	$I_{2}$	$V_{o 1}$
	HP	Non-inverting	$I_{3}$	$V_{o 1}$
	BS	Non-inverting	$I_{1} = I_{3}$	$V_{o 1}$
	AP	Non-inverting	$I_{1} = I_{2} = I_{3}$	$V_{o 1}$