Filter Designer

Filter: Lowpass

Parameter Name	Value
Type:	Lowpass, Butterworth
Topology:	Sallen-Key
Order:	10
Number Of Stages:	5
Gain:	177.828 V/V (45 dB)
Corner Frequency:	80 Hz
Allowable Passband Ripple:	1 dB
Corner Frequency Attenuation:	42 dB
Stopband Frequency:	140 Hz
Stopband Attenuation:	-45 dB
Calculated Gain:	177.828 V/V (45 dB)

Parameter Name	Value
Cascade:	1
Topology:	Lowpass Sallen-Key, Two Pole
Gain:	2.818 V/V (9 dB)
Quality Factor:	0.506
Min GBW required:	11.414 KHz
Cutoff Frequency:	80 Hz
Calculated Gain:	2.819 V/V (9.001 dB)
Calculated Quality Factor:	0.506

Parameter Name	Value
Cascade:	2
Topology:	Lowpass Sallen-Key, Two Pole
Gain:	2.818 V/V (9 dB)
Quality Factor:	0.561
Min GBW required:	12.653 KHz
Cutoff Frequency:	80 Hz
Calculated Gain:	2.818 V/V (9 dB)
Calculated Quality Factor:	0.561

Parameter Name	Value
Cascade:	3
Topology:	Lowpass Sallen-Key, Two Pole
Gain:	2.818 V/V (9 dB)
Quality Factor:	0.707
Min GBW required:	15.943 KHz
Cutoff Frequency:	80 Hz
Calculated Gain:	2.818 V/V (9 dB)
Calculated Quality Factor:	0.707

Parameter Name	Value
Cascade:	4
Topology:	Lowpass Sallen-Key, Two Pole
Gain:	2.818 V/V (9 dB)
Quality Factor:	1.101
Min GBW required:	24.832 KHz
Cutoff Frequency:	80 Hz
Calculated Gain:	2.818 V/V (9 dB)
Calculated Quality Factor:	1.101

Parameter Name	Value
Cascade:	5
Topology:	Lowpass Sallen-Key, Two Pole
Gain:	2.818 V/V (9 dB)
Quality Factor:	3.196
Min GBW required:	72.066 KHz
Cutoff Frequency:	80 Hz
Calculated Gain:	2.818 V/V (9 dB)
Calculated Quality Factor:	3.196

Filter Schematic

HtmlCascade: 1

HtmlCascade: 2

HtmlCascade: 3

HtmlCascade: 4

HtmlCascade: 5

Bill Of Materials

Resistors: E192 0.5%
Capacitors: E192 0.5%
Inductors: E192 0.5%

HtmlCascade: 1

Element Name	Used Value	Value	Standard
C1	3.12uF	3.12uF	3.12uF
C2	1.27uF	1.27uF	1.27uF
R1	1K	1K	1K
R2	1K	1K	1K
R3	1.6K	1.6K	1.6K
R4	2.91K	2.91K	2.91K
U1	11.414 KHz	11.414 KHz

HtmlCascade: 2

Element Name	Used Value	Value	Standard
C1	2.98uF	2.98uF	2.98uF
C2	1.33uF	1.33uF	1.33uF
R1	1K	1K	1K
R2	1K	1K	1K
R3	1K	1K	1K
R4	1.82K	1.82K	1.82K
U1	12.653 KHz	12.653 KHz

HtmlCascade: 3

Element Name	Used Value	Value	Standard
C1	2.73uF	2.73uF	2.74uF
C2	1.45uF	1.45uF	1.45uF
R1	1K	1K	1K
R2	1K	1K	1K
R3	1K	1K	1K
R4	1.82K	1.82K	1.82K
U1	15.943 KHz	15.943 KHz

HtmlCascade: 4

Element Name	Used Value	Value	Standard
C1	2.4uF	2.4uF	2.4uF
C2	1.65uF	1.65uF	1.65uF
R1	1K	1K	1K
R2	1K	1K	1K
R3	1K	1K	1K
R4	1.82K	1.82K	1.82K
U1	24.832 KHz	24.832 KHz

HtmlCascade: 5

Element Name	Used Value	Value	Standard
C1	2.06uF	2.06uF	2.05uF
C2	1.92uF	1.92uF	1.93uF
R1	1K	1K	1K
R2	1K	1K	1K
R3	1K	1K	1K
R4	1.82K	1.82K	1.82K
U1	72.066 KHz	72.066 KHz