MCP6XXXDM-FLTR Microchip Technology, MCP6XXXDM-FLTR Datasheet - Page 17

• Manufacturer Part Number: MCP6XXXDM-FLTR
• Description: KIT DEMO BOARD ACTIVE FILTER
• Manufacturer: Microchip Technology

Specifications of MCP6XXXDM-FLTR

• Main Purpose: Filters, Active - Bandpass, Highpass, Lowpass
• Embedded: Yes, MCU, 8-Bit
• Utilized Ic / Part: MCP6271
• Primary Attributes: Cascadable PCBs, Single Supply
• Secondary Attributes: Bessel, Butterworth, and Chebyshev, with Order 1 ~ 8
• Processor To Be Evaluated: MCP6271
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Not applicable / Not applicable

© 2006 Microchip Technology Inc.
2.5.1
FilterLab V2.0 labels the capacitors and resistors in its circuit diagram as follows:
• R12 = Resistor, Section # 1, Resistor # 2 in that section
• C31 = Capacitor, Section # 3, Capacitor # 1 in that section
• Ra = Gain setting resistor for op amp in Sallen-Key Section # 1 (open, and not
• Rb = Feedback resistor for op amp in Sallen-Key Section # 1 (0Ω, and not
The resistor and capacitor reference designators on the Active Filter Section board
(Z1 - Z11) need to be filled according to FilterLab’s design. The following sub-sections
show how to convert from FilterLab’s circuit diagram to the PCB.
In the following, the PCBs are given section numbers 0 to 4:
• Section # 0 – for V
• Section # 1 to # 4 – for cascaded Active Filter Section
The different circuit topologies referred to in Section 2.5.2 “Sallen-Key, Low-pass Fil-
ter Sections”, Section 2.5.3 “Sallen-Key, High-pass Filter Sections”, and
Section 2.5.4 “Multiple Feedback, Low-pass and Band-pass Filter Sections” will
be labeled as shown in Figure 2-6.
FIGURE 2-6:
labeled, when in unity gain)
labeled, when in unity gain)
FilterLab Circuit Topology vs. PCB Reference Designators
AAA:
BB:
#:
C:
Filter Section Labels.
DD
SK = Sallen-Key
MFB = Multiple Feedback
LP = Low-pass
BP = Band-pass
HP = High-pass
1 = Single, Real Pole
2 = Double, Complex Poles
“blank” = Sallen-Key Unity Gain Buffer (K = 1)
K = Sallen-Key Non-unity Gain Amplifier (K > 1)
/2 Filter Section
or Multiple Feedback
AAA-BB#-C
DS51614A-page 13