MCP6XXXDM-FLTR Microchip Technology, MCP6XXXDM-FLTR Datasheet - Page 25

• 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

3.4
© 2006 Microchip Technology Inc.
TESTING THE FILTER
Figure 3-3 is a picture of the fully assembled filter shown in Figure 3-1. Note that the
board on the left (V
source and power supply to the filter. JP1 on this board may be connected to INT or
EXT in this case.
FIGURE 3-3:
Kit.
3.4.1
Figure 3-4 shows the most important DC bias voltages to check.
FIGURE 3-4:
3.4.2
Resistors and capacitors with tighter tolerances will reduce the variability of the filters
response over process and, sometimes, temperature. Figure 3-5 shows the simulated
±3.3 sigma gain error (in dB) for each frequency (based on a uniform random
distribution). Figure 3-6 shows a histogram of the pass-band frequency (f
same simulation.
V
GND
GND
GND
DD
V
V
DD
/2
IN
DC Bias
Response Variability
DD
Picture of the Filter Supported by the Active Filter Demo Board
Points to check DC Bias.
/2 Filter Section) provides an easy way to connect the input signal
Test V
OUT
Here
Test Supply Voltages Here
DS51614A-page 21
P
) from the
V
V
GND
GND
V
GND
DD
DD
OUT
/2