MAX3677EVKIT+

19-5065; Rev 0; 12/09 EVALUATION KIT AVAILABLE MAX3677 Evaluation Kit The MAX3677 evaluation kit (EV kit) is an assembled demonstration board that provides convenient evaluation of the MAX3677 low-jitter, precision clock generator. The EV kit includes an on-board 25MHz crystal to allow for immediate testing. Features S AC-Coupled I/Os for Ease of Testing S Fully Assembled and Tested S +3.3V Power-Supply Operation S On-Board 25MHz Crystal The EV kit includes switches to allow easy selection of different modes of operation. The clock outputs use SMA connectors and are AC-coupled to simplify connection to test equipment. Ordering Information PART TYPE MAX3677EVKIT+ EV Kit +Denotes lead(Pb)-free and RoHS compliant. Component List DESIGNATION QTY C1 1 C2, C4, C5, C9, C11–C15, C20, C44, C54–C64, C66, C67 24 DESCRIPTION QTY 2.2FF Q10% ceramic capacitor (0805) 0.1FF Q10% ceramic capacitor (0402) C3 1 33FF Q10% Tantalum capacitor (B case) C6, C21 2 0.01FF Q5% ceramic capacitor (0402) 1 10FF Q20% ceramic capacitor (0603) C17 1 3pF Q5% ceramic capacitor (0402) C45 1 27pF Q5% ceramic capacitor (0402) C46 1 33pF Q5% ceramic capacitor (0402) J4, J8, J10 3 2-pin header, 0.1in centers J13 1 SMA right-angle connector J14 1 SPDT switch J15, J16, J35, J36, J44, J51, J52, J55, J56, J59–J62, J65, J66 15 SMA connectors C7 DESIGNATION DESCRIPTION L1 1 4.7FH inductor (DS1608) R1, R89 2 49.9I Q1% resistor (0402) R2 1 Do not install (0402) R3 1 0I Q5% resistor (0402) R34 1 10.5I Q1% resistor (0402) R87, R90 2 806I Q1% resistor (0402) R88 1 33.2I Q1% resistor (0402) SW3 1 SP3T switch TP1, TP2, TP3, TP5, TP26, TP28, J2, J48 8 Test points U6 1 +3.3V, low-jitter, precision clock generator (32 TQFN-EP*) Maxim MAX3677CTJ+ Y1 1 25MHz crystal NDK America EXS00A-AT00429 — 3 Shunts — 1 MAX3677 EVKIT BOARD + REV A *EP = Exposed pad. Component Suppliers SUPPLIER NDK America PHONE 815-544-7900 WEBSITE www.ndk.com/en Note: Indicate that you are using the MAX3677 when contacting these component suppliers.    1 Evaluates: MAX3677 General Description Evaluates: MAX3677 MAX3677 Evaluation Kit Quick Start For evaluation of the MAX3677, configure the EV kit as follows: 1) D  etermine which output is going to be evaluated and connect to the test equipment through SMA cables. Be sure not to leave any outputs unterminated, i.e., place 50I terminators on all unused outputs. 2) Set PLL_BP high so that the on-board crystal is used. 3) P  lace a shunt on J8 (VDD_DIFF) and J10 (VDD_SE) to connect the power supply for the differential and single ended outputs. 4) C  onnect a +3.3V power supply to J48 (VCC) and J2 (GND). Set the current limit to 200mA. Adjustment and Control Descriptions (see Quick Start first) COMPONENT NAME J4 INDUCTOR SHUNT J4 shunts the power-supply inductor. Normal operation is J4 not shunted. J8 VDD_DIFF Connects the power supply for the Q0, Q1, Q2, Q3, Q4, Q5, and Q6 clock outputs to the VCC supply. J10 VDD_SE J14 OE SW3 2   _ PLL_BP FUNCTION Connects the power supply for the Q7 clock output to the VCC supply. When set to HIGH, the Q4, Q5, and Q6 outputs are enabled. When set to LOW, the Q4, Q5, and Q6 outputs are disabled. When set to HIGH, the PLL locks to the crystal interface (25MHz at X_IN and X_OUT). When set to OPEN, the PLL locks to the OSC_IN input (25MHz typical). When set LOW, the PLL is bypassed and the OSC_IN input is selected. When bypass mode is selected, the VCO/PLL is disabled to save power and eliminate intermodulation spurs. MAX3677 Evaluation Kit Evaluates: MAX3677 Figure 1. MAX3677 EV Kit Schematic    3 Evaluates: MAX3677 MAX3677 Evaluation Kit Figure 2. MAX3677 EV Kit Component Placement Guide—Component Side 4   _ MAX3677 Evaluation Kit Evaluates: MAX3677 Figure 3. MAX3677 EV Kit PCB Layout—Component Side    5 Evaluates: MAX3677 MAX3677 Evaluation Kit Figure 4. MAX3677 EV Kit PCB Layout—Ground Plane 6   _ MAX3677 Evaluation Kit Evaluates: MAX3677 Figure 5. MAX3677 EV Kit PCB Layout—Power Plane    7 Evaluates: MAX3677 MAX3677 Evaluation Kit Figure 6. MAX3677 EV Kit PCB Layout—Solder Side 8 Microsemi Corporation (NASDAQ: MSCC) offers a comprehensive portfolio of semiconductor solutions for: aerospace, defense and security; enterprise and communications; and industrial and alternative energy markets. Products include high-performance, high-reliability analog and RF devices, mixed signal and RF integrated circuits, customizable SoCs, FPGAs, and complete subsystems. Microsemi is headquartered in Aliso Viejo, Calif. Learn more at www.microsemi.com. Microsemi Corporate Headquarters One Enterprise, Aliso Viejo CA 92656 USA Within the USA: +1 (949) 380-6100 Sales: +1 (949) 380-6136 Fax: +1 (949) 215-4996 © 2012 Microsemi Corporation. All rights reserved. Microsemi and the Microsemi logo are trademarks of Microsemi Corporation. All other trademarks and service marks are the property of their respective owners.