MAXFILTERBRD Evaluates: MAX7408MAX7415/ MAX7418MAX7425 General Description Features The MAXFILTERBRD is an unpopulated PCB design to S CLK Pad for External Clock Frequency evaluate the MAX7408MAX7415/MAX7418MAX7425 S Lead(Pb)-Free and RoHS Compliant 5th-order, lowpass, switched-capacitor filters (SCFs). S Proven PCB Layout Contact the factory for free samples of the pin-compat- ible MAX7408MAX7415/MAX7418MAX7425 SCFs to Ordering Information evaluate these devices. PART TYPE MAXFILTERBRD+ EV Kit +Denotes lead(Pb)-free and RoHS compliant. Part Selection Table Component List (Suggested Components) OPERATING PART FILTER TYPE DESIGNATION QTY DESCRIPTION VOLTAGE MAX7408CUA+ 5V Elliptic Not installed, 47pF Q5%, 50V C0G ceramic capacitor (0805) MAX7409CUA+ 5V Bessel C1 0 Murata GRM2165C1H470J or MAX7410CUA+ 5V Butterworth similar MAX7411CUA+ 5V Elliptic Not installed, 2200pF Q5%, 50V MAX7412CUA+ 3V Elliptic C0G ceramic capacitor (0805) MAX7413CUA+ 3V Bessel C2 0 Murata GRM2165C1H222J or MAX7414CUA+ 3V Butterworth similar MAX7415CUA+ 3V Elliptic Not installed, 0.1FF Q10%, 16V MAX7418CUA+ 5V Elliptic X7R ceramic capacitors (0603) C3, C4 0 MAX7419CUA+ 5V Bessel Murata GCM188R71C104K or MAX7420CUA+ 5V Butterworth similar MAX7421CUA+ 5V Elliptic Not installed, 2-pin headers JU1, JU2 0 MAX7422CUA+ 3V Elliptic shorted by PC trace MAX7423CUA+ 3V Bessel Not installed, 10kI Q1% resistor R1 0 MAX7424CUA+ 3V Butterworth (0805) MAX7425CUA+ 3V Elliptic Not installed, lowpass SCF Note: Contact the factory to order a free sample of any of the M U1 0 (8 FMAX ) SCF parts. See the Part Selection Table 1 PCB: MAXFILTERBRD+ Component Supplier SUPPLIER PHONE WEBSITE Murata Electronics North America, Inc. 770-436-1300 www.murata-northamerica.com Note: Indicate that you are using the MAXFILTERBRD when contacting this component supplier. MAX is a registered trademark of Maxim Integrated Products, Inc. For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxims website at www.maximintegrated.com. 19-4884 Rev 0 8/09MAXFILTERBRD Evaluates: MAX7408MAX7415/ MAX7418MAX7425 OSCILLOSCOPE Tektronix TDS3012 OR SIMILAR SINE-WAVE INPUT FUNCTION GENERATOR 1 SINE-WAVE FREQUENCY: FILTERS SINE-WAVE OUTPUT MAXFILTERBRD 0.001kHz TO 15kHz EV KIT AMPLITUDE: 4V MAX P-P Agilent 33120A OR SIMILAR OFFSET: 2.2V TYPICAL DC EXTERNAL CLOCK GND +5V/+3V POWER SUPPLY HP E3610 OR SIMILAR Figure 1. Filter Evaluation Test Block Diagram the 5V supply to the VDD pad and the negative termi- Quick Start nal of the supply to the GND pad closest to the VDD Required Equipment pad. If the installed IC is the MAX7412MAX7415 or MAXFILTERBRD MAX7422MAX7425, connect the positive terminal of the 3V supply to the VDD pad and the negative Suggested components (see the Component List) terminal of the supply to the GND pad closest to the 5V or 3V DC power supply (depending on the IC VDD pad (see Figure 1). Set the function generator installed) to 4V max, 2.2V offset (typ), and 1kHz sine wave, P-P Function generator (e.g., HP 33120A) and connect the signal to the IN pad. 2-channel digital oscilloscope (e.g., Tektronix TDS3012) 3) Connect the first channel of the oscilloscope to the IN pad. Procedure Caution: Do not turn on power supply until all connec- 4) Connect the second channel of the oscilloscope to the OUT pad. tions are completed. 1) Install all suggested components shown in the 5) Connect the oscilloscopes ground probe to any GND Component List onto the MAXFILTERBRD. pads. 2) If the installed IC is the MAX7408MAX7411 or 6) Turn on the power supply. MAX7418MAX7421, connect the positive terminal of 7) Verify the output on the OUT pad. 2 Maxim Integrated