Skip to main content

View full-text article in PMC

. 2022 Nov 8;22(22):8619. doi: 10.3390/s22228619

Table 1.

Variant filtering functions of the universal filter.

Filtering Function		Input	Output
LP	Non-inverting	$V_{i n 4} V_{i n 5} V_{i n 1} V_{i n 1}$	$V_{o 1} V_{o 1} V_{o 2} V_{o 3}$
LP	Inverting	$V_{i n 3} V_{i n 6} V_{i n 1} V_{i n 2}$	$V_{o 1} V_{o 1} V_{o 2} V_{o 3}$
BP	Non-inverting	$V_{i n 1}$ and $V_{i n 6}$ $V_{i n 3} V_{i n 6} V_{i n 3}$	$V_{o 1} V_{o 2} V_{o 2} V_{o 3}$
BP	Inverting	$V_{i n 2}$ and $V_{i n 5}$ $V_{i n 4} V_{i n 5} V_{i n 4}$	$V_{o 1} V_{o 2} V_{o 2} V_{o 3}$
HP	Non-inverting	$V_{i n 5} and V_{i n 2}$	$V_{o 3}$
HP	Inverting	$V_{i n 6} and V_{i n 1}$	$V_{o 2}$
BS	Non-inverting	$V_{i n 5}$	$V_{o 3}$
BS	Inverting	$V_{i n 6}$	$V_{o 3}$
AP	Non-inverting	$V_{i n 5} and V_{i n 4}$	$V_{o 3}$
AP	Inverting	$V_{i n 5} and V_{i n 3}$	$V_{o 3}$

Note: the unused inputs should be grounded.