Type : Bandpass
Response : Butterworth
Order : 4
Number of Stages : 2
Filter Design Report
Design : Bandpass Filter - 4th order Butterworth
Design ID: 1
R2_S1 R2_S2
1.15 Mohm 1.24 kohm
Vcc Vcc
C2_S1 C2_S2
100.0 nF 100.0 nF
R1_S1 R1_S2
52.3 kohm 56.2 ohm
LMH6647 LMH6647
R3_S1 R3_S2
118.0 kohm 118.0 ohm
Vsignal C1_S1 C1_S2
100.0 nF 100.0 nF
Vee Vee
R4_S1 R5_S1 R4_S2 R5_S2
118.0 ohm 2.49 kohm 118.0 ohm 2.49 kohm
Electrical BOM
# Name Manufacturer Part Number Properties Qty
1. A1_S1 Texas Instruments Inc. LMH6647 GbwTyp= 40MHz 1
VccMax= 12V
VccMin= 2.5V
2. A1_S2 Texas Instruments Inc. LMH6647 GbwTyp= 40MHz 1
VccMax= 12V
VccMin= 2.5V
3. C1_S1 Generic Ideal Cap= 100.0 nF 1
Tolerance= 2.0 %
4. C1_S2 Generic Ideal Cap= 100.0 nF 1
Tolerance= 2.0 %
5. C2_S1 Generic Ideal Cap= 100.0 nF 1
Tolerance= 2.0 %
6. C2_S2 Generic Ideal Cap= 100.0 nF 1
Tolerance= 2.0 %
7. R1_S1 Generic Ideal Res= 52300.0ohm 1
Tolerance= 1%
8. R1_S2 Generic Ideal Res= 56.2ohm 1
Tolerance= 1%
9. R2_S1 Generic Ideal Res= 1150000.0ohm 1
Tolerance= 1%
10. R2_S2 Generic Ideal Res= 1240.0ohm 1
Tolerance= 1%
11. R3_S1 Generic Ideal Res= 118000.0ohm 1
Tolerance= 1%
12. R3_S2 Generic Ideal Res= 118.0ohm 1
Tolerance= 1%
13. R4_S1 Generic Ideal Res= 118.0ohm 1
Tolerance= 1%
Copyright © 2024, Texas Instruments Incorporated 1
Filter Design Report | Bandpass Filter - 4th order Butterworth | December 17, 2024 03:44:25 GMT-06:00
Filter Design
# Name Manufacturer Part Number Properties Qty
14. R4_S2 Generic Ideal Res= 118.0ohm 1
Tolerance= 1%
15. R5_S1 Generic Ideal Res= 2490.0ohm 1
Tolerance= 1%
16. R5_S2 Generic Ideal Res= 2490.0ohm 1
Tolerance= 1%
Copyright © 2024, Texas Instruments Incorporated 2
Filter Design Report | Bandpass Filter - 4th order Butterworth | December 17, 2024 03:44:25 GMT-06:00
Filter Design
Sensitivity Analysis
# Name Series Tolerance
1. Cap E48 2%
2. Res E96 1%
Copyright © 2024, Texas Instruments Incorporated 3
Filter Design Report | Bandpass Filter - 4th order Butterworth | December 17, 2024 03:44:25 GMT-06:00
Filter Design
Design Inputs
# Name Value Description
1. FilterType bandpass
2. FilterResponse Butterworth
3. FilterOrder 4.0
4. FilterTopology Sallen-Key
5. NumberOfStages 2.0
6. CenterFrequency 632.45
7. StopbandAttenuation -40.001
8. PassbandBandwidth 19.98 k
9. StopbandBandwidth 199.8 k
10. Gain 1.0
11. DualSupply +/-5.00 V Power supply(s) to active chips
12. ResistorTolerance E96 Resistor series - 1% Passive resistor tolerance
13. CapacitorTolerance E48 Capacitor series - 2% Passive capacitor tolerance
Design Assistance
1. LMH6647 Product Folder : http://www.ti.com/product/LMH6647 : contains the data sheet and other resources.
Copyright © 2024, Texas Instruments Incorporated 4
Filter Design Report | Bandpass Filter - 4th order Butterworth | December 17, 2024 03:44:25 GMT-06:00
Filter Design
Filter Stage :1
Cutoff Frequency 20.715 Hz
Min GBW Reqd 31.686 kHz
Stage Gain 22.102 V/V
Stage Q 734.504 m
Stage Topology Sallen-Key
R2_S1
1.15 Mohm
Vcc
C2_S1
100.0 nF
R1_S1
52.3 kohm
LMH6647
R3_S1
118.0 kohm
C1_S1
100.0 nF
Vee
R4_S1 R5_S1
118.0 ohm 2.49 kohm
Electrical BOM
# Name Manufacturer Part Number Properties Qty
1. A1_S1 Texas Instruments Inc. LMH6647 GbwTyp= 40MHz 1
VccMax= 12V
VccMin= 2.5V
2. C1_S1 Generic Ideal Cap= 100.0 nF 1
Tolerance= 2.0 %
3. C2_S1 Generic Ideal Cap= 100.0 nF 1
Tolerance= 2.0 %
4. R1_S1 Generic Ideal Res= 52300.0ohm 1
Tolerance= 1%
5. R2_S1 Generic Ideal Res= 1150000.0ohm 1
Tolerance= 1%
6. R3_S1 Generic Ideal Res= 118000.0ohm 1
Tolerance= 1%
7. R4_S1 Generic Ideal Res= 118.0ohm 1
Tolerance= 1%
8. R5_S1 Generic Ideal Res= 2490.0ohm 1
Tolerance= 1%
Copyright © 2024, Texas Instruments Incorporated 5
Filter Design Report | Bandpass Filter - 4th order Butterworth | December 17, 2024 03:44:25 GMT-06:00
Filter Design
Filter Stage :2
Cutoff Frequency 19.982 kHz
Min GBW Reqd 31.623 MHz
Stage Gain 22.102 V/V
Stage Q 708.31 m
Stage Topology Sallen-Key
R2_S2
1.24 kohm
Vcc
C2_S2
100.0 nF
R1_S2
56.2 ohm
LMH6647
R3_S2
118.0 ohm
C1_S2
100.0 nF
Vee
R4_S2 R5_S2
118.0 ohm 2.49 kohm
Electrical BOM
# Name Manufacturer Part Number Properties Qty
1. A1_S2 Texas Instruments Inc. LMH6647 GbwTyp= 40MHz 1
VccMax= 12V
VccMin= 2.5V
2. C1_S2 Generic Ideal Cap= 100.0 nF 1
Tolerance= 2.0 %
3. C2_S2 Generic Ideal Cap= 100.0 nF 1
Tolerance= 2.0 %
4. R1_S2 Generic Ideal Res= 56.2ohm 1
Tolerance= 1%
5. R2_S2 Generic Ideal Res= 1240.0ohm 1
Tolerance= 1%
6. R3_S2 Generic Ideal Res= 118.0ohm 1
Tolerance= 1%
7. R4_S2 Generic Ideal Res= 118.0ohm 1
Tolerance= 1%
Copyright © 2024, Texas Instruments Incorporated 6
Filter Design Report | Bandpass Filter - 4th order Butterworth | December 17, 2024 03:44:25 GMT-06:00
Filter Design
# Name Manufacturer Part Number Properties Qty
8. R5_S2 Generic Ideal Res= 2490.0ohm 1
Tolerance= 1%
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Filter Design Report | Bandpass Filter - 4th order Butterworth | December 17, 2024 03:44:25 GMT-06:00
